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Spitting Image Written by Leo_Todrius Commissioned by Quixoticfur

The halls and laboratories of Molecucore were full of the smells of cleaning agents and displaced grime as the facility underwent its annual spring cleaning. It almost seemed like a punishment to be dealing with such foul and hazardous materials when the weather outside was so nice for the first time in months, but it was company policy. For some lab technicians, the spring cleaning merely meant washing more beakers than usual and dusting under the expensive equipment... But for Lyle Bennet, it was a much less passive event. Lyle moved through the sub-basement corridors, his footsteps echoing off the cinder block walls. Few traveled so far down, few had to... Most of the sub-basement was artificially cleaned, kept sterile... But Lyle was heading to the last room on the hall, the room that had been his misfortune to have to clean. He reached the door, lifted his key card and ran it through the swiper.

The door unlocked and eased open, revealing a large, dark room. Lyle reached over and flicked on the light. He had short blond hair and round glasses. He was lithe, a bit short, and fairly frail in general. He adjusted his glasses, looking around at the room. Both walls and a center island were lined with cages, each hooked up to an automated feeding system. Many of the cages were empty, though a few had held residents for up to a year. Every lab animal that could no longer be subjected to tests but had survived had been sent down, essentially put into storage until they were sent to their final destination. A few lucky animals would be sent to farms and community outreach clinics that took animals that had been experimented on, but most would not be so lucky.

Lyle moved along through the room, trying to get an idea of where to start. He moved to the back wall and grabbed a cart, pulling it out, looking from cage to cage. They had a few chickens, a few mice, a dog, lizards, rabbits... It was quite a zoo, though there was a sudden click of surprise in a cage as Lyle brushed it. Lyle turned, peering in, almost jumping back in shock. At first he had assumed the occupant to the cage was a dog, but it was soon clear that the animal was a rat... the biggest rat Lyle had seen in his entire life. It had to be over a hundred pounds... As big around as it was long, minus the tail. The rat had thick brown fur and gray paws. Its tail was long and furless, gnarled in a few places with one distinctive scar near the tip. One of his ears had a small hole in it as well.

The rat picked up a large chunk of old, crusty bread in its paws and started to munch away, turning to look at Lyle... but as the rat's head turned and their eyes met, Lyle felt a charge move through his body. He couldn't blink, he couldn't look away. His eyes were locked to those of the rat. It was uncomfortable to look at the rat at first, Lyle felt as if a strange, thick grease was flowing into his brain, saturating it. The longer he looked, the stranger he felt... but then a strange calm started to wash over him, a contentment, a peace... almost a lackadaisical approach to everything. Lyle's shoulders slowly slouched, his posture became sloppier and a strange, weak smile crossed his lips.

The rat in the cage continued to chew on its food, gazing into the human's eyes. The rat had been experimented on countless times for many years. He'd been given growth formulas, IQ increasing agents, mutagens, toxins, behavior reconditioning. He'd been neglected, over-fed, under-fed, left on his own and stuffed in with a hundred other rats. He'd been through anything and everything, even more than legally was allowed. One doctor had snuck down to liberate him fro one unsanctioned test, returning him just in time for another to do the same. The result was a creature that had never before been seen, an intelligent, self-aware rat... and a rat that had his own special abilities.

The rat knew why Lyle had come. He was smart enough to sense the change in the air, and what he didn't know before, he had gained through Lyle's eyes. They truly were the windows to the soul... But while the rat was gleaning information from the human, his life experience was flowing into the human. Lyle continued to shift gently as he was eye locked with the mesmerizing rat. Lyle felt so strange, not from the gaze, but from his clothes. They were so confining, so restrictive. He reached up to unbutton his shirt, tugging at it before it opened up... but the flesh beneath was not as it had been. For the first time in his life, Lyle had a bit of a pudge. A soft layer of fat had swept over his stomach, erasing what few lines of definition were there. His nipples had swollen too, something was certainly happening.

The rat in the cage continued gazing at Lyle, feeding the human subject memories, personality, traits. Somewhere in the back of his mind, Lyle lost the part of himself that knew his own name... His entire identity was unraveling, but a single name sprung up into his consciousness, Nestor. That was their name, the name the humans had given them... At least that was what Lyle thought as his entire brain was being over-written. He wasn't just changing, he wasn't just transforming... He was becoming, becoming the same as the rat in the cage. Nestor watched with pride as part of Lyle's ear seemed to dissolve away, as if it had been bitten... but the changes were accelerating.

Lyle's dishwater blond hair darkened, taking on a dusty, greasy brown color. His eyes shrank some, his ears grew, his nose rounded and the nostrils flared. His mouth pushed forward, his fingernails turned brown and then black, stretching out into points, sinking into his fingers to become claws. Lyle shuddered softly, pulling his shirt off, reaching for his pants... pants that were quickly becoming too tight. Lyle moaned, feeling his waist get thicker and wider, his ass cheeks rounding. His belly pushed out more, his chest sagged... It was a lot of new fat, but beneath that there was new muscle, toning up and hardening, masked by the extra flesh... though it was hardly 'extra' in the long run.

As much as Lyle was growing around his waist, he was shrinking in his spine. His vertebrae contracted, his bones throbbed... Inch by inch, Lyle was losing height. His body was actually reshaping itself. The lab tech looked down at his feet, only to see shoes and get disgusted. He untied them and pulled them off, pulling his socks off next before grabbing at his underwear. He wasn't satisfied until he was standing naked in front of the rat cage, his eyes drawing back to Nestor. He looked at the rat inside... and then the strangest thing happened. He remembered what it was like to be in there, to be the rat he was looking at. The food was alright, but the conditions were cramped... And some stupid human was going to come to kill them; neither of him could stay there. He had to get out.

Almost as if they were working with one brain, Lyle moved to open the cage. He held out his arms and Nestor moved forward, climbing out. Lyle tried to support his weight, but as his body shifted, it was almost like holding another person. Lyle grunted and lowered to his knees on the ground, Nestor heavy on his lap... a naked lap. Nestor lifted up on his haunches, putting both paws on Lyle's chest, gazing into his eyes with more intensity, more direction and focus than before. Lyle shuddered and the grin on his lips started to grow wider as he remembered how fun it was to be a rat, to be a dirty rat... a dirty, horny rat. Lyle's cock started to harden just as Nestor's emerged from its sheath. The big rat moved to start humping and grinding against Lyle, rubbing his furry, oily cock and sheath all over the human's package... a package that wasn't going to remain human much longer.

Lyle shuddered as his cock throbbed and tingled. He felt so strange, almost as if he was masturbating with himself and making love to someone else at the same time. He felt no compulsion against humping a lab rat; he felt no distinction between the rat and himself. He was Nestor; there simply wasn't more to it than that. The two ground, but Nestor watched the human, watching him continue to change. Lyle's mouth elongated, the jaw growing and narrowing. It was just enough to pull his glasses away from his face, sending them clattering to the floor. Whiskers began pushing out of Lyle's cheeks, whiskers that he twitched every time Nestor did. Lyle grinned a bit, feeling soft brown patches of fur starting to push out across his body, focusing on his chest, under his arms and across his face.

As Lyle changed, even his hair grew shaggier and wilder. His brown stubble crossed his entire face, moving up his cheeks, around his eyes and across his growing muzzle. Patches covered his chest, his back, his shoulders. It spread like wild fire. As much as Nestor wanted to enjoy the change, he knew he couldn't leave any human witness to what had happened, even if there would now be two of hum... but that wasn't bad. There wasn't any creature he loved in the world more than himself. It only seemed fitting that there would be more of him to go around... assuming they would be able to get out of the facility.

Having assimilated Nestor's life experiences, Lyle and the rat had the same thought at the same moment. They needed an escape route. Lyle stood up on his haunches even as his legs contracted and his hips changed. He toddled over and opened the door to the hallway. Nestor dropped to all fours and moved out of the door and into the hall and Lyle followed after, changing more as he moved. His ass cheeks were fuzzy, but the tail growing out just above them was not. It was a thick, gray corded tail with a hunk missing out of it. Every cell in the human's body was being converted to match the rat's.

Lyle's hands and feet finished changing into knobby, fleshy paws, his arms shortened, his belly shifted, his organ changed. By the time they reached the end of the hall, there was no longer any Lyle... Only two giant, fat, strong rats with the same mind, personality, and love of themselves. The rats moved to claw at the locks on the hatch to the access tunnels, managing to click the lock and pull it off. They had trained in thousands of laboratory mazes; they were very good at finding their way around. One rat hopped up and the other followed, the two disappearing into the guts of the building, the path that would lead them to the outside world.

****

The heavens above rumbled as the skies darkened, a storm moving over the city. The spring sunshine was no match against the gunmetal gray clouds or the rain they held. The storm began to dump sheets of rain even as it advanced, covering the city in an advancing wall of water. Amid the sounds of thunder and rain, another rumbling came from the tires of a skateboard as a teenager rolled along, trying to find any spot to hunker down. He wore a dark brown hooded sweatshirt and torn out gray and black camouflage pants. His black shoes were worn and ratty and he had smudges of dirt under his nails and across his stubbled cheeks. His teeth were a bit yellow, he had cuts and scrapes. All around, Simian had seen far better days in his life... days before he had been homeless.

Despite his attempt to escape, the rain caught up to him and passed him over, coming down like liquid nails pelting him. Simian grunted, his eyes peering around before he spotted a little nook between two buildings. He rolled along and returned into the nook, getting out of the rain but not the moisture. The walls were already damp, apparently still damp from the last storm. Sim sat down on his board, looking out at the narrow view of the city before him. The street gutters were filling with rain water, rain water that rolled along and funneled into the sewers. Sim wasn't thinking much of it until he noticed movement at one of the storm drains.

Two paws reached out, clutching at the cement before Nestor drew himself up and out of the storm drain, swimming along against the current until the water got shallower. Simian saw the creature and watched in awe and surprise, assuming at first it was a lost nutria that had been washed into the storm drains further out of the city, but as he saw that tail, his eyes grew huge in shock. The rat was monstrously large, like something out of a comic book. The rat looked around the streets before it spotted Sim. It turned, charged across the street and moved right for him. Sim sprung to his feet and backed up in fear at having such a big creature racing toward him. It didn't move like a dog or nutria, it moved like a rat... lightning fast. It went through the water, up the curb and stopped short of Sim's feet.

Sim tried to figure out how to get past the rat. He moved off to the left but Nestor rose up onto his hind legs, showing off his furry belly. Sim hesitated, trying to get around the other side. Nestor followed the human as he moved before meeting eyes with him. As their eyes met, Sim's movements stopped. His fear and trepidation melted away... and slowly his thoughts started to erode. As the moments passed, he started to feel more and more comfortable with Nestor's presence, as if he'd known the rat all his life. There was no reason to be afraid of someone like that. It'd be like being uncomfortable around one's self. Sim slowly sat down on his skate board again, his legs wide. Nestor lowered onto all fours and moved up, sticking his muzzle directly into Sim's groin, nuzzling it.

Sim chuckled and pet the rat's slimy fur, stroking his fuzzy brown head before he grunted, feeling teeth slicing into his pants. Nestor nibbled and chewed and tore at the cloth, eating a hole in his pants, then in his underwear. Sim felt somewhere in his mind that he should have been shocked, but soon his cock and balls hung out in the open air... and Sim merely felt that everything was right in the world. Nestor spit out the cloth before he put his front paws on Sim's chest and used his back to move forward, bringing his hips up to the hole in Sim's pants.

Blood flowed into Nestor's cock, making the rat hard. He slid his cock through the hole in Sim's pants and started to hump and grind against the human. Sim hadn't been changed as fast as Lyle, but the marbles in his mind had been rattled enough that this didn't seem odd at all. He reached down to stroke Nestor's back, pulling them together. He grunted as he got his rat humps, loving the hot, wet fur against his skin and how greasy Nestor's cock felt. The two continued to bump and grind and hump, but Nestor started working again.

The rat leaned in and began to chew through Simian's hoodie, then his t-shirt, gnawing away at the material until there was a hole in the center of his chest. Nestor leaned in and licked the sweat and the filth off of the homeless teen's chest, continuing to hump and grind. Sim moaned harder, feeling himself slowly approach orgasm. He gazed down at his rat, thankful for what good buddies they were. Some small part of his mind thought about how Nestor had crossed the street and come up to him with no fear, no doubt, as if he knew precisely what he was doing. Nestor lifted his head and looked into the human's eyes once more and Simian shuddered, feeling his mind starting to erode again, a strange shadow creeping through his thoughts, blanking out part of his life, then more parts. New, simpler thoughts started to occur to him... thoughts about how life was about eating and sex and not much else, and how the dirtier he got during sex, the better. They hadn't been his thoughts, of course. They had been Nestor's, but the process had started. Simian was becoming Nestor, whether he wanted to or not.

Sim's lips started to curl into a snide, narcissistic smile. He looked at Nestor and realized that rat was the most handsome thing in the world. He didn't need the approval of anyone else, he simply loved himself. That self-love was infectious, far more than Sim realized... even as his fingers became knobby, his hands turned gray and the hair on his arms started to thicken. The hole in Sim's shirt filled in with ruddy brown fur, sticking out in a thick patch. Nestor let out a chitter of excitement before rubbing his head in the soft tuft. Sim moaned, so proud of his rat fluff. He reached down between them, wrapping his changing paw around their cocks, stroking both rat and rat boy off. His skate shoes became looser as his feet changed shape, the toes growing claws, the feet becoming a little less wide and a little longer. Nestor was quite pleased with himself, though he wanted to take things a little further with Sim, and without even reading Nestor's mind, the same thought occurred to Sim.

The human slowly helped Nestor off his lap before he turned over and got down on all fours, lying across his skateboard. Nestor climbed up on his hind legs and stuck his mouth right onto the ass of Sim's pants. His teeth sliced through the fabric and he began chewing through the material again, creating a large hole right over the cleft of his cheeks and his waist. As the fabric was taken away, a small lump was revealed, already forming. Nestor leaned in to lick and nuzzle the nub, stimulating its growth. The nub stretched out, turning gray as the flesh became ribbed and corded, a small divot appearing in one portion. The tail stretched out, growing steadily. Nestor was quite pleased, but it was time for the next stage.

The dog sized rat climbed up, positioning his rat cock over Sim's ass, teasing the ring of flesh before he thrust in. Sim shuddered. The cock was so alien in his posterior, so greasy and slimy and wonderful. Nestor humped Sim harder; loving not the human he saw before him, but he parts of himself he saw appearing. Sim's ears grew out rounder, longer and a bit velvety. His face extended and his nose changed, the human even grew whiskers out of his cheeks. His tail passed a foot, then two, then three, then even more as it curled longing around Nestor's back. Nestor humped the human vigorously, pistoning in and out... but as Sim's body started reorienting his mass, the pleasure increased for both of them.

Sim's height was converted into fat and muscle. His arms and legs shrunk, his spine contracted, his belly grew, his muscles bulged, his colon shrank and his ass cheeks grew. With every thrust, Nestor filled a beefier, smaller, tighter, hotter rat boy. Sim's clothes got too loose for him, hanging like sheets from his increasingly furry body. They started to get in the way and disgust him. Sim carefully rose up onto his back haunches, reaching up to tear at his shirt, splitting it open before throwing it away. Without a shirt to hide his body, it was clear how furry he was getting all over. Thick tufts hung from his elbows and grew out across his arms. His chest was covered, his stomach was fuzzy, even his spine was getting soft with fur. The fur spread outward, covering his swelling belly. It distended and pushed out, covering an abdominal sheet of muscles.

Nestor hissed in pleasure, fucking Sim eagerly, watching the human's stubble become brown fur, his hair get shaggy, his nose get longer, his muzzle fill in. His teeth changed, his neck thickened, every part of him was getting better by the moment. Nestor changed his angle of attack to increase the friction and pleasure, hissing again in pleasure. Soon Sim's lips parted and he hissed as well, grabbing his swelling, fattening rat cock with his new rat paws, jerking himself off as he fucked himself. That was truly how he thought about Nestor, as himself. His human mind had been washed away, eroded, eliminated.

Nestor ran his claws over Sim's furry hips, tugging the loose cloth down. The last shred of fabric above his tail split and the pants pooled around the former skater's shoes, shoes that had plopped off of his feet. Nestor kept fucking the human out of Sim, watching the fur spread, his body shrink, weight converted into fur... and then the amazing moment came where they were the same size, two identical, fat, muscled, brilliant rat beasts... with the same memories and the same thoughts. Nestor fucked himself, grinding like mad. The other Nestor pushed his hips back, knowing every movement to do to maximize pleasure for both. They shuddered and grunted before both rats felt their balls tug up, their muscles tense and their cocks pulse. The original Nestor sprayed cum deep into his convert's ass while the new Nestor sprayed his spunk all over the strange board covered with sand paper and mounted to wheels. He had no memory of what the device was for, only that it made a good shelf for their fucking. The two soon collapsed into a heap of sweat and fur and cum, basking in their own bodies and how dirty they were as naughty rats.

****

The storm outside continued to rage, but the gray and the wet was diffused through the blinds into the basement level apartment. The windows were high, near the ceiling. It was almost a cave, but for Jose it was a kingdom. The sound of the rain outside was comforting to Jose, like an aura of solitude. His mother hated being at home when it was raining, she never liked living in such cheap, subterranean apartments... and if she wasn't at home, she couldn't boss Jose around or distract him. After a week of chores and petty tasks, Jose was ready for a little break.

The eighteen year old lay on his bed, wearing nothing at all. His cinnamon brown skin was soft and clean, his black hair was lying feathered across his face, a soft black mustache lined his upper lip, half way between peach fuzz and a real respectable growth... and his hand was curled around his shaft.

The teenager worked his cock up and down, fantasizing about nothing and everything, moaning as the thunder boomed outside... But the sudden sound of scratching forced him to stop. He looked around in confusion, wondering what the sound had been... but after a moment he got back to jerking off, his hand flying up and down his length. He moaned happily, but once more was interrupted by the ominous sound. He turned his head, looking to his window, freezing in shock as it started to open. The blinds crinkled as they were moved out of the way. A rat head stuck out from under them, meeting eyes with Jose. Jose's body shuddered as a charge moved through him. The blinds crinkled again as another rat head stuck through, then a third. Three identical rats looked in at the human... and Jose suddenly felt as if it was okay to resume jacking off, as if it was an obligation.

One rat jumped down, then another, then the third. They moved along before climbing up onto the teenager's bed. One moved to lay on his legs just below his balls, moving to lick his shaft. Another climbed onto his chest, forcing the air out of his lungs, filling his nostrils with the smell of sweat and musk and cum and wet rat. The third moved to start nuzzling the boy's feet, rubbing its muzzle between his toes, licking away at them, nibbling the digits... Jose wanted to be disgusted, freaked out, horrified... But if anything, the three huge rats turned him on more. He panted, adding his second hand to his cock, working himself off harder and harder, gazing into the eyes of the rat on his chest, moaning eagerly.

Jose trembled as the changes moved through his body, his mind saturated with lewd thoughts of self love. His lips parted to reveal buck rat teeth, his ears swelled and stretched, his toenails turned black and stretched into claws. His feet changed, bit by bit into knobby rat feet, feet that one of the Nestors was absolutely in love with. He sucked the digits off, loving the feel of the leathery flesh. The Nestor on Jose's chest rubbed against the thickening brown fur there, watching the human get corrupted. The rat on his legs seemed to be having the best time, nuzzling balls... balls that were changing quickly.

As Jose jacked off, his sack had swelled larger, the fleshy covering growing soft brown fur to cover the engorged balls. His cock was getting slipperier, redder, wider and drippier in his hands... It was glorious, pure unadulterated pleasure... and his body was changing more and more. His legs started to shorten, shrinking back. The rat on his legs and the rat on his feet slid together, inch by inch until their furry butts were touching. His arms squeezed down and his back contracted, all that extra length pushing out on his belly, rounding it and fattening him up.

Jose's face elongated into a muzzle, his mustache splitting off on either side of his nose before it grew out into brown fur and spread across his cheeks, over his nose and around his eyes. His black hair blanched out to a dark brown and grew as fuzzy as the rest... and slowly a thick tail stuck out from his hip, the tail growing longer and longer by the moment. His shrinking body continued to diminish until the rats on his leg knocked each other off and the rat on his chest was covering his head and stomach. Jose had shrunk enough to be dwarfed by the sheer number of his fellow rats.

In a few short moments, the teenager that had occupied that room was gone forever. His mother would never see him again. In his place was one more Nestor. Four identical, creative, lewd rats sat on the bed... and being the same person, they all thought up the same idea on how to get their jollies at the same time. The Nestors all flopped over onto their sides, wriggling around into a circle until they came up to nuzzle the groin of the rat ahead of them. One by one, they slid their muzzles over the cock there, letting the cock glide over their teeth and tongues as they started to suck and slurp, bobbing their heads up and down. No matter how many times they had cummed that day, there always seemed to be more, more of a need and more to share.

The four rats suckled and bobbed their heads across the cocks in their maw, pleasuring each other. They tasted the cum, the sweat, smelled the musk and reveled in their brilliance. They loved destroying the human lives to replace it with their own, they loved sex, they loved how easy it was. They were reprehensible and they loved it. All four rats sucked away longer, harder, more intently... and then they came. In unison, en masse, with the same thoughts in their minds. All four rats came hard and fast, gulping the seed of their next Nestor down, letting it fill their bellies... Bellies that felt good with the cum filling, but lacked a certain something else...

The four rats pulled off of each other, rolling onto their paws, looking around. Their stomachs rumbled, their whiskers twitched. They were hungry... and they could use a good bit of food. One Nestor, the one that had once been Jose, had a faint recollection of where a good source of easy food was. He moved, clawing at the bedroom door before it opened, leading the others off. They passed the kitchen in Jose's apartment, childproofed, and headed out into the apartment halls, moving toward the stairs that would lead them up to higher levels and higher goals. The rats formed a line, four rats in a row, moving in unison, with common purpose. Four bodies but one mind, all Nestor... and he was very pleased of each incarnation of himself that he had created.... Knowing the future would only hold more pleasure for him.

****

There were few people in the Woodcomb apartments that loved animals more than Christian Lambert. He had been fortunate enough to find an apartment that had a very liberal and tolerant acceptance of his pets. He lived on the first floor near the back door and had even put a doggy door into the front door of his apartment... a doggie door that was being invaded by four fat brown dog sized rats. They moved in with no fear, as if they owned the place. A husky looked up at the sudden invasion and went to growl, but as it met eyes with one of the rats, it wobbled and passed out, slumping on the floor. Two of the rats moved over to where the husky had been and started to chew and gnaw on the dog kibble, eating away. Another rat pulled over the garbage can and started to pick through it for food. Another continued around the corner, gazing at a shiba inu until it passed out and then continued on. Christian sat in the living room, sipping a beer, watching his favorite hunting show. He was home from work and enjoying every moment of it, though the growing series of thumbs, bumps and scratches in the kitchen started to tug at his attention. Christian sipped at his beer.

"What is it boy? Something wrong?" he called out, "Come here, stop making a mess." He said without looking, patting his lap. The rustling in the kitchen stopped. Without delay he felt something land on his lap, a big weight. He reached down to stroke it, but the fur didn't feel right. It felt silkier, greasier, wrong in every way. He looked down, coming eye to eye with a giant brown rat, another one waddling into the room and starting to tear into a bag of chips. Christian shuddered, "What the fu..." but he never finished his word, looking at the rat. It was as if the creature was taking an ice cream scoop to his memories, digging them out by the mushy pink ball.

Of all the things Christian could have done, he lowered the beer bottle to the rat's muzzle. The rat grabbed onto it with both paws and took several gulps, saliva dripping into the bottle. Christian raised it again to take a gulp before he set it aside, leaned down and kissed the rat around the muzzle. The rat squeaked happily, clawing at Christian's shirt. Christian reached forward and slipped it off, trying not to knock the rat off of himself before he tossed his shirt aside. The two resumed their kissing, their tongues tangling and bodies rubbing. Very abnormal animal whiskers grew out of Christian's cheeks as his cock grew hard in his pants. The rat started to rub his furry ass against the bulge teasingly, knowing the human could do nothing until he had shrunk enough.

Christian grunted happily, his heart racing as he made out with the sexiest animal ever. The rat at his feet pulled his shoes off and tossed them aside before it chewed at his socks, pulling at the material until they slipped off and he went back to eating the spilled bag of chips. Christian didn't care; he gazed into the eyes of Nestor, the beautiful eyes that he loved with all his heart. His thoughts of camping were replaced with thoughts of the sewer. His memories of camp were replaced with memories of a laboratory. His favorite meal became two day old pizza and uncooked ramen and his name faded away from his mind.

Christian sunk down lower in his chair as his neck and spine shrank, his arms diminished and his legs shortened. His brown hair grew a bit shaggier, his cheeks became fuzzy, his nose stretched out and the bulge in his pants grew tighter. Nestor rubbed all over the man's belly as it swelled out and grew fuzzy, brown fur spreading out from his chest and arms, covering his limbs, his skin taking on a sickly gray color as it toughened up. Christian reached down to push off his pants, letting them slide around his feet. To Nestor's surprise, the human hadn't been wearing any underwear in the first place.

Nestor rubbed his ass along the human's cock, feeling it reshape and become more rat like... and just when it was the right size, he dropped back, impaling himself on the length, letting it fill him. The rat started to bounce up and down on the pole, Christian grabbing his furry hips, using him like a sex toy. Each thrust changed Christian faster. His nose inflated at the tip, turning black and round like a button. His jaw pushed forward, his cheeks parted and a tail started to grow. His feet and hands became knobby and odd, the fur coated his arms and legs and chest and back, even his face. Soon he looked like a short teenager wearing a fur suit instead of the handsome, strong twenty eight year old he had been... and that was still changing.

As Christian shrank, the mating he partook in with Nestor looked more and more equal... until at last Christian was the same brown monstrosity all of his fellow brothers were. They mated and fucked, writhing and squeaking in pleasure before Christian came, his cum spraying deep into Nestor's ass. Nestor's ass quivered, milking Christian's rat cock for all it was worth. Christian shuddered and the two lingered together until no more cum flowed between them... and with that, both Nestors climbed off of each other and the chair, dropping down on the floor to partake in delicious chips and dog kibble.

****

The old van rattled down the road, held together more by luck and prayer than its own chassis. It hadn't helped that there was a giant rubber cockroach bolted to the roof or seven hundred pounds of equipment loaded in the back. Pete Sullivan was rather worried about the truck, given that it was his responsibility and this was his first solo assignment. When he had graduated high school, he had never expected to become an exterminator... but in the hard economy, he was lucky to get any job. The nineteen year old had been apprenticing for a few months, but now was his time to shine... proverbially.

The red headed youth was garbed in a khaki jumpsuit loaded down with air testers, tank gauges, straps, traps and every other accoutrement. He'd loaded himself down with every possible tool for the job, though he had been trained more on the insect side of things rather than the rodent side... and the call he'd received had mentioned monster sized rats. Pete was worried, but he hoped that he'd be up to the challenge. He spotted the apartment and pulled over, trying to parallel park between two cars, barely making it. He hopped out and moved around the van and up to the building, reaching out to press the buzzer for the apartment that had called him. He waited a long moment and then buzzed again.

As the moments went by, Pete was starting to feel like he'd been duped and his time had been wasted. He turned to leave, but the door clicked and opened behind him. Pete turned, looking back. No one was coming out, he must have been buzzed in. Maybe their intercom was broken and he had just been rude to presume he'd been duped. Pete blushed a bit and moved into the building, heading into the dark hallways. He had already been creeped out by the promise of monster rats, it didn't help that the lights were off. Thankfully he had equipment to help with that. He reached to his utility pocket and pulled out a mask, tugging it on, flipping the night vision on. The hallway soon defined itself in vague green and black shapes.

Pete looked at the numbers on the apartments and moved along, trying to find the one that had called him. He rounded the corner and moved along, making some progress before there was a thump behind him. Startled, Pete spun around... and almost wished he hadn't. In near silence, Pete had been followed by eleven rats that had to be over a hundred pounds. They looked like an entirely new species. Pete's heart nearly jumped through his chest as he backed up. One of the rats moved forward ahead of the others, looking up at him. Pete's night vision flickered a bit, getting some sort of interference.

"Oh not now..." Pete muttered, needing to see what he was doing. He started fumbling through his pockets, trying to fight the queasy feeling he was having. Several of the rats rose up onto their hind legs, looking around at each other in surprise that the human hadn't yet fallen under their sway. More of them tried looking at him to start the process. Pete yelped as his mask nearly went dark. He had to get out before he was completely blind, call for reinforcements. Pete looked around before spotting a fire extinguisher. Panicked, he grabbed it, pulled the pin and let loose. The thick jets of carbon dioxide sprayed all over the rats, knocking them back, clouding their vision and causing them to scatter. There were panicked thumps in every direction as they darted away and Pete broke into a sprint.

Pete rounded the corner and made it to the lobby, tripping over the rats as they spilled ut of the door. He landed on the cement and rolled, his mask clattering off his face. He wheezed, the air knocked out of his lungs. He opened his eyes to see a rat scrambling past him. It turned to face him but Pete was already climbing into the truck, landing on the passenger side seat, closing the door behind him. He slumped into his chair, panting hard. He knew his superiors would probably make fun of him, but he'd never heard of hundred pound rats, let alone been trained to deal with that many of them. He slowly turned, looking back at the building, wondering why a small part of him felt at home looking at it, thinking of the dark hallways. He shrugged the feeling off and reached for the radio to call in the strange incident.

****

The Extrerminator franchise had never had to deal with an investigation before, but Pete's experience had certainly necessitated one. At first his superiors laughed it off as some sort of prank, but when they got a follow up call from the building manager, they had gone in personally. They hadn't found anyone that had witnessed the rats, but several tenants were missing. The manager was furious that Pete had used a perfectly good fire extinguisher, and worried about bad press, Pete had been placed on a week's leave... unpaid.

Pete opened the door to his own apartment, his shoulders slumped. His first assignment and he'd already fouled it up. It was hard to believe... He shut the door behind him and set his gear down in a chair by the door before moving through the living room and heading into the kitchen. He had no idea why, but he was still starving. He'd stopped at a burger place on the way home, but it just felt like he wanted to fill his stomach as full as it could go. He opened his fridge and looked around before grabbing a slice of pepper jack cheese, nibbling away on it as he started rifling through his possessions. He grabbed a stale sandwich from the top shelf but only peeled the bread off and started to nibble at it, crumbs falling down the front of his shirt as he gulped it down.

Blood started to rush to his groin as he ate, making him a bit horny. Pete was surprised by the sensation but still enjoyed it. If eating could make him feel that good, perhaps he'd have to eat more... and the food he was eating tasted so very good. He fumbled behind him, groping for the short stool he kept around to reach the taller cabinets and brought it up behind him, using it as a chair. Sitting down, he could eat without having to crouch. The refrigerator began to hum, trying in a futile effort to keep the fridge cool as Pete ate and ate and ate. He pulled out more cheese, hunks of bread, took swigs of various drinks. Before too long, Pete didn't even know what he was eating. His teeth gnashed through it all as if he was storing food for the winter, getting dribbles all over his chin and his shirt. Minutes passed, then a half hour, then a full hour - a full hour of eating. Pete stuffed one last morsel of forgotten bread past his lips and swallowed. Then he leaned back against the step stool and moaned.

Pete reached down to rub at his belly. His stomach couldn't contain another shred of food... He was absolutely stuffed. His belly was even swollen with all he had eaten. He rubbed his stomach a little more, inadvertently playing with his deeper than average belly button before he shut the fridge door and rose to his feet, wobbling a bit. Pete let out a deep belch before he waddled to his room, collapsing onto the bed to sleep off the stress of the day and his feast. Without work to look forward to, he didn't really have any care for what time of day or night it was. He hadn't even bothered to get out of his dirty clothes, spreading crumbs and drips of sauces from his shirt and chin across his sheets and pillow cases, snuggling against it all.

Soon the red headed exterminator had passed out cold, his chest rising and falling with his breaths, a soft snoring coming from his throat as he drifted off into dreams of being free, of being an animal among the wild, roaming the streets as if they were his own. In his sleep, Pete's lips curled, revealing his teeth as he dream nibbled on more food, shuddering gently.

****

The merits of having a twenty four hour grocery store in the neighborhood had never seemed as good to Pete as they did as he went on a round of midnight shopping. He'd cleaned out his fridge and had awoken craving a midnight snack, only to realize there wasn't anything left. He moved through the grocery store, pulling almost everything into his cart, salivating as he looked at all the good treats. He got a case of Ramen, then a second case. He piled high on the cheese and bread and bagels and cake and doughnuts, murmuring in delight at it all. When he rounded the corner and saw a display of stale bread set out on sale, Pete's pants tented, his cock raging hard. He rushed over, sniffing at the old bread, murmuring happily. He began to pull one piece out, looking around both directions before he stuffed it into his mouth, gulping it down. He took another piece, then another before he stuffed his face into the paper bag, gulping at the bread, gnashing it with his teeth, swallowing until the bag was empty. He balled it up, then looked around before he tossed the bag under the closest display. Then he grabbed the rest of the stale bread and dumped it into his over-full cart.

Pete wandered along the aisles, his eyes darting around almost animalistic ally. He passed the pharmacy, pausing as he caught sight of his reflection in the mirror. He stepped away from his cart and looked at himself, turning a bit. His belly hadn't gone down from his earlier feast, if anything it bulged out more. His arms were thicker with fat but muscle at the same time, and his cheeks had started to darken with stubble, but the stubble was more brown than usual. Pete had changed a lot in the last day, but no aspect of himself had changed more than his weight. Pete looked at himself before a grin crossed his face. He looked damn fine... He was a sexy beast, no one could resist him. He posed a bit, sticking out his belly further, flexing his muscles. In the midst of his self love, Pete shuddered, his eyes rolling into the back of his head as a wet spot formed in his pants. He had orgasmed just appreciating his fat and muscle... He grinned a bit wider, proud that he was that much of a man. He moved back to his cart and pushed it along, intent on finishing his shopping trip so he could feast yet again.

****

The apartment was dark and quiet, still... and somewhat disgusting. Pete hadn't left since his trip to the grocery store two days prior. He was still wearing the same clothes from the day he'd been fires, though his shirt had ridden up and stretched around his chest like a bikini top, displaced by his round, fuzzy belly. His pants were stained with every kind of substance in the apartment and the sheets were no better. Pete had really started to lose himself, getting so fat and slobby... But he wasn't just becoming dirtier, something else was happening. His fingernails were longer, honing to points, getting a bit thicker. His tailbone ached and throbbed, a small lump forming at the base of his spine and his front teeth were a bit more pronounced than before. Still, Pete had been sleeping like a hibernating bear, unused to seeing daylight for the last two days. It wasn't until a particularly loud car horn sounded that his eyes snapped open.

Pete looked around, wondering if his alarm was going off before he remembered that he was on leave. He sighed, shifting a bit uncomfortably because of his shirt. Pete started to wonder why he was wearing it still. At first he thought it was out of laziness, but then he remembered it had some delicious alfredo sauce on it still... But as delicious as the sauce was, Pete wanted to be unencumbered. He reached up and tried to pull it over his head before he gave up and just tore it apart, tossing it aside, lying back... and admiring himself. Pete licked his swollen, darker lips as he looked at his huge, round nipples, his rounded pecs, his rounded belly... He was so big, so sexy... He reached up, tracing his sharp fingers through the brown fuzz on his chest, the pleasure trail that led down across his belly, and then he plunged his hand into his pants.

A hiss escaped Pete's lips as he wrapped his fingers around his slimy cock, stewed in his own juices. He gave it several squeezes and thrusts up and down before his other hand opened up his pants. The heel of his hand brushed against the dried cum on the underside of his belly again and again. Pete grinned even more at that, loving just how sexy he felt. He was a nasty beast and he loved it that way. Soon Pete was jerking himself off more and more, thrusting his hips up, squeezing his engorged cock. Even it was bigger, more wonderful, and delightful in every way. Pete roared, looking around, wishing he had a mirror above his bed. He wanted to watch himself as he masturbated, he wanted to watch the sexiest man alive in the throes of passion... But at least he had the next best thing; he WAS the sexiest man alive.

Pete snarled and thrashed before his eyes squeezed shut. His cock pulsed and throbbed before thick ropes of cum began spraying up, drizzling and splattering all over his chest. While his right hand worked his cock, his left hand massaged it all into his chest fur, wiping it around, smearing it over his fat chest. He loved being such a slob; it was like heaven on earth. After a few moments, Pete's load had subsided completely. He sighed with relief and laid back against his bed, basking in the after glow before he started drifting off, passing out again, resting up for the coming feast that night.

****

A deep rumbling of Pete's stomach awoke him from his slumber. His eyes slipped open, seeing that night had fallen outside. Just as he predicted, he was wide awake. He slipped his legs out over the edge of his bed, but they didn't quite reach the floor. Confused, Pete scooted more to the edge. It still wasn't enough. He scooted a bit more and finally his feet reached. He stepped out onto them, a little surprised for a moment, but soon that surprise faded. He tapped his toes on the floor, his long, curved toenails making soft clicks. He stretched his shorter arms out to his side before he waddled through his apartment, making his way to the fridge. He eased it open and started pulling out all the fixings for a gigantic hoagie sandwich, but instead of making the sandwich, he just dropped the food onto the floor. Shreds of lettuce, slices of meat and cheese, crumbled bread. Once he'd made a suitably horrible mess, he let the fridge door close and dropped onto all fours, moving to eat all the food up.

As Pete advanced along the floor on all fours, the lump sticking out above the waistband of his boxers grew out longer, developing a soft point, stretching inch by inch into a short tail. The tail developed small groves, lines around every so often like a corded tail... though it seemed as the tail grew in, part of it couldn't fill out, almost as if a bite had been taken out of it. The same sort of gap had appeared on one of Pete's ears, ears that were a bit larger than they had been the night before, thinner and bigger all around.

Pete picked up shreds of food and stuffed them into his mouth, sucking on his fingers. As he pulled his digits out of his mouth, they seemed different. The skin on his hands was tougher, more leathery. The pink had faded a bit, giving them a more gray color. His fingernails darkened to a dark brown and his knuckles seemed a bit more knobby... but Pete didn't care. If anything, the changes let him grab his food easier and it was all for the better. His feet were changing too, growing longer and thinner. His toenails darkened to brown, then black, sinking into his toes to emerge from the tips as claws.

While the changes to his hands and feet were most distinctive, the changes seemed to be spreading over the rest of his body as well. His knees shifted a bit, his hips reconfigured and his elbows changed. His forearms were shrinking and his legs were too, but Pete didn't care in the slightest. Soon his fuzzy brown ball sack and long, thick cock were lying on the floor, draped over a slice of cheese and a hunk of bread. Pete moaned, loving food so much that he started to hump and grind against it, feeling the coarse grain slide against his shaft. He kept humping his snack before he shuddered and let out a spray of thick musky sperm all over the floor. Pete kept humping, smearing his juices all over his furry belly, grinning from oversized ear to oversized ear. Life was very good.

****

Pete woke up on the kitchen floor, covered in crumbs, completely naked. His ears twitched as he tried to figure out why he had woken up. There was a voice in the room, an angry voice. He rolled over onto his fat belly and used his arms and legs to lift himself up. Despite his fat, he was surprisingly strong and rose with ease. He moved out from behind his kitchen counter, looking around before he spotted the source of the voice, his answering machine.

"Just pick up Pete, I know it ain't easy being low man on the totem pole, but a job is a job. You better get in here right now man, or you won't have a job to come back to." His boss shouted before the answering machine clicked off. Pete felt a little like he should have remembered that voice, but then again why would he have wanted to remember someone so angry? Pete moved through the apartment on his rat paws, his back shining with the thick patches of brown fur that had grown out there. Even his hair had turned brown and his face was covered with a short, soft brown beard. The more that Pete thought about it, the more he felt that something was missing... He couldn't remember much of anything. He couldn't recall that voice, or his own voice, or what had come before his first great feast. His brain felt like it'd been sucked out clean and the filthy thoughts he had weren't quite enough to fill it. He needed more, he needed to know... but first he needed to have another meal... and another good masturbation session. Then he would be ready.

****

It felt oddly right moving along the sidewalk outside his apartment. Pete felt comfortable with the wind blowing through his fur, feeling it against his face. Every step he took from the apartment, his body was refining itself. His jaw and nose pushed out into a muzzle, his beard fur covered the rest of his head, his lower body filled out with fur and his tail lengthened. He had continued to convert height into fat and muscle, but he was still incomplete, he was still missing that core part of himself... and as much as he loved himself, he wanted all of him to be there.

At first Pete hadn't been sure of where to go, where to find the answers he wanted, but then he remembered how that one apartment building had felt like home, that apartment building in the dark. Pete focused on the fuzzy, vague memories. He remembered showing up, being scared... but then he had seen his family! Pete grinned, thinking of the rats and how lovely they'd been. He missed them dearly, and couldn't remember why he had been scared. He scampered along the streets, moving toward the apartment.

The huge rat moved around the corner and stopped, sniffing the air before wincing. He smelled poison. He lifted up on his hind legs and looked ahead to see three trucks with rubber cockroaches on them, each with hoses running into a cloth tent that covered the apartment building, his home. Pete squeaked in dismay, his shoulders sagging. He lowered his head and sighed, but only for a moment. Again his black nose quirked as he sniffed the air, smelling something else, something wonderful.

He turned, looking around, following his nose. He moved toward the street, looking both ways to avoid cars before he scampered across and followed the gutter. The smell was getting stronger and stronger... He could smell it, something amazing... Cum! He could smell cum! The rat licked his lips before he found the source of the smell, a particularly large storm drain. He moved up to the grates and began to squeeze through, finding that he could fit into a much smaller space than it seemed like he could fit. It was all part of being a rat.

Pete squeezed through the grate and dropped down onto a cement liner running along the sewer trough. He turned and scampered along as if he was finally home, following the twists and turns before he emerged into a wide open space. Eight different sewer tunnels converged, creating a lake of storm run off and overflowed waste, but in the center of it all was a large cement island above the filth... An island covered with twenty hundred pound furry brown rats, all with the same holes in their ears and tails, all fat and muscles, all covered in slime and cum and food, humping and fucking and admiring themselves. Pete realized he was home at last.

A great squeak escaped Pete's lips as he lunged over the water line and landed on the island, running up to the others. He nuzzled and rubbed and bumped hips with them all. The Nestors were all surprised and delighted to have yet another brother join them, but they noticed peculiarities in the rat's movements. The rat wasn't yet... him. One of the Nestors pounced Pete, pinning him to the ground, holding him in place, meeting eyes with him. Pete gasped in delight as he started to feel his brain writhe with new information. The hollow emptiness of his own life was starting to fill in with Nestor's memories, his personality.

As much as he loved himself, Nestor loved himself more. As lewd as Pete was, Nestor was lewder. An almost evil grin crossed Pete's lips as he stopped being Pete and began to be Nestor. The last of the human mentality was expunged, replaced with the fat, monster rat that had escaped the lab and spread clones of himself out into the world. When Pete was no more, the brand new Nestor shuddered and came, spraying rat cum all over his own belly and over the Nestor that had changed him. The two exchanged a quick kiss before they both moved to get back to the celebration... The celebration of all they had accomplished, and of their plan to move out into the city and add even more to their ranks.