Advanced Bulking

Story by Sebin Nyshkim on SoFurry

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On the way home from his routine workout session Andrew comes across a mysterious grocery store he's never seen before. The produce are ginormous, two or three times the size of regular fruit and vegetables, but there's a catch to them which the German shepherd will learn of soon enough. Let's just say he's in for a big surprise...


Yes, for the longest time I upload something again xD

After about 6 months my first growth story is finished, after I got into it :3

I would also like to thank the proof-readers, who helped me find mistakes and offered suggestions:

  • Razinox

  • DanteLupine

  • Dragonrhapsody

  • CourageOtter


The artificial light from the fluorescent lamps reflected within his goggles. Carefully, he applied a gentle pressure onto the orange in front of him. The needle of the syringe slowly penetrated the rind and found its way into the pulp. Pressing his thumb on the plunger, the raccoon injected a colorless, transparent-like liquid from the syringe into the fruit until the barrel was completely emptied. Beads of perspiration formed on his forehead as he prayed that everything would go accordingly to plan, just as it did in his previous tests. He removed the needle from the fruit and took a few steps back. For a few seconds, nothing seemed to happen... had the formula failed? The orange began to twitch. Within moments, the orange grew to double its original size. The raccoon took off his goggles and turned to his audience in the monitoring room above him. A resounding applause echoed over the speaker system, which was relayed through the microphones in the podium above.

"An outstanding performance," a hyena in a suit praised, as he came down into the test chamber accompanied by several others. "With this formula, we will revolutionize the food market! Just imagine, how we can double, no... triple the profit of our yield effortlessly!"

All his colleagues in suits gave a roaring applause, only to be interjected by the raccoon scientist who had demonstrated the experiment. "I would like to point out, however, that the tolerability with living organisms by means of ingestion hasn't been tested. We can't predict how--"

"Oh, pish posh!" The hyena in the suit dismissed. He took the orange in his paw and studied it closely. "Does this look like a harmful orange to you? To any of you?"

Disgruntled, the scientist laid back his ears. Typical businessmen... scientific backgrounds never interested these windbags. He couldn't reconcile with his conscience that such untested stimulants would be circulated. The thought of resignation gnawed against his thoughts; he wouldn't want to be held responsible for the mess that was about to transpire and as he stormed out of the test lab he laid out his resignation in his head.

"We are starting the production of our SuperFoods today so that they can go on sale as soon as possible," the businessman announced ceremoniously and reaped another round of applause. Within a few weeks, the stocks were ready for shipment and were delivered to stores on a large scale.


Andrew was on his way home from a workout session, carrying his sports bag over his shoulder. The German shepherd liked to keep on his sportswear after workouts, especially during summer, when he wore shorts and a tank top. The warm asphalt along the pedestrian zone was exactly what his sore feet needed after cardio training on the treadmill. Somewhat absent-mindedly, he strolled through downtown with his phone in his paw when he was approached by someone: "Hey, you look like someone who's mindful of a healthy diet." When the German shepherd looked up from his phone, he saw a snow leopard who was stacking boxes in front of what he assumed to be a greenhouse. Andrew couldn't remember ever having seen a greenhouse on his way home from the gym. The snow leopard who had addressed him wore something that resembled a simple gardener outfit; checkered shirt, blue jeans, and a green apron which complemented his otherwise light gray fur sprinkled with charcoal-grey rosettes.

"Sorry, but I don't own a garden." Andrew rejected, even though the snow leopard hadn't offered him anything.

"Oh no, no," the snow leopard laughed. "We sell everything fully grown. Come on in."

"Well, taking a look can't hurt," Andrew thought before he followed the snow leopard inside. The shepherd glanced at the sign hanging over the entrance in which store he even set foot in.

MonstroFoods -- Outgrow the competition!

"Seriously?" He thought to himself and rolled his eyes, but chuckled nevertheless. "I hope the stuff they sell is better than their sense of humor."

What awaited him inside far exceeded his expectations. Grapes the size of oranges, oranges as big as cantaloupes, cantaloupes the size of watermelons -- and how did these shelves even carry the weight of those giant pumpkin-sized watermelons? Andrew sauntered through the corridors, barely able to get out of his amazement; everything one could imagine, two or three times bigger. Although the whole store was in a greenhouse, the climate was relatively pleasant.

"Well, impressed?" The snow leopard asked with a smug grin, resting his paws on his hips and swaying his bushy tail.

Andrew nodded. "How the heck are these things here so huge?!"

"Company secret," he winked at the German shepherd. "Can I get some things for you?"

If he was already here, he figured he could do his weekly shopping right away. Andrew started with his usuals; an assortment of berries as snacks, bananas, apples and oranges for breakfast and lastly, a cucumber, tomato, paprika and a head of lettuce. Due to their enormous size, Andrew didn't have to buy too much; everything he got could easily last him a week. However, he didn't expect the fruits to weigh as much as they did; he had to lift with vigor to keep the bags from dragging along the ground. "Welp, guess it's also arm day today," Andrew thought as he raised his purchases like dumbbells.

"Hope to see you again soon," the snow leopard saw him off.


Even though Andrew's home wasn't far, the goods he carried made him feel as though he had been walking for ages. By the time he got home, the afternoon sun began beating heat down on every surface it touched, his humble abode could only do so much to dissipate the radiating heat. He set down the shopping bags, groaning and panting, before he dragged himself into the bathroom, deciding to deal with the groceries later. The German shepherd got rid of his sweaty clothes and got into the shower, allowing the cool water to run against his fur. It was a minor discomfort, no doubt, but he welcomed it nonetheless; on warm days like these, he could ask for nothing better. After Andrew felt sufficiently cooled, he climbed back out of the shower stall and grabbed a towel to rub himself dry. Just before he left, the German shepherd couldn't help but admire his reflection inside the cabinet mirror.

A smug grin found its way onto Andrew's chocolate-brown muzzle as he gave his biceps a flex in front of his chest and posed in a way that made his pectorals protrude prominently under his caramel colored fur. The black-gradient fur around his arms and legs helped accentuate his muscles further as the shepherd raised his arm and bent it to flex it once more. He ran his fingers through the thick underfur of his upper arm and kneaded the hard muscle. It was still a bit sore, but his efforts were certainly paying off. With the towel tied around his waist, he went into his bedroom to put on a fresh set of clothes: boxer briefs, loose-fitted jeans and a red lumberjack shirt with rolled-up sleeves.

Clean and refreshed, Andrew set about putting away his groceries. He dragged the heavy bags once more through the open living area and into the kitchen. One aspect which Andrew had underestimated was the problem of fitting everything into the fridge. The huge produce took up nearly all the space his fridge had to offer. With some shifting around, the German shepherd managed to shut the door on his fridge -- although the berries were the only thing that left out. "Well, I could use a snack," he thought to himself before he got a bowl from the cupboard to put the berries in. Usually, five measly berries wouldn't be enough to satisfy his palate, but these apple-sized ones certainly could. Feeling cheeky, he sent a photo of that bowl of berries to a friend.

"Check out these huge buggers!"

It didn't take long for a response.

"What the hell?! Where did you get those?"

"Got them at a new store that opened downtown. MonstroFoods or something."

"Are you sure that's edible?"

"Yeah, otherwise they wouldn't sell it, would they?"

"They look very weird to me. I wouldn't eat any of it. Who knows what they did with that."

"Well, more for me ;)"

Andrew took a berry from the bowl and sprawled on the couch. The berry easily fitted around his whole paw and he could bite it off of like he would an apple. While he was nibbling on the giant berry, he whipped out his phone and looked up MonstroFoods. Scrolling through the search engines, almost nothing came up, nor was it listed on any online map service yet. "Figures..." The German shepherd thought while he took another big bite out of the berry. Perhaps it was a new establishment and it required time to set itself up -- and it seemed like the only logical explanation for now. He shot another photo of the bitten berry, slightly oozing with juices, in his paw and sent it to his friend.

"See? Nothing to worry about--"

While he was composing his message -- with the help from autocorrect -- he felt his onscreen keyboard getting harder to type. He didn't think much of it; typing with one paw was always hard. On closer inspection, however, Andrew noticed that the berry in his paw didn't seem as big as before. He looked over at the bowl, realizing that it actually appeared smaller to him. As time went on, the berries in his paw seemed to shrink in size.

"What's going on? Am I high?"

As the shepherd dog sat up to put the berry back in the bowl, he noticed that he felt unusually constricted. His shirt stretched on his torso and the rolled-up sleeves began to pinch his arms. Despite wearing loose-fitting jeans, they chafed his legs as he put both feet on the floor.

"These jeans weren't so tight before, right?"

Andrew tried to get rid of his clothes, but his tight sleeves were already limiting his movement so much that he couldn't reach for the buttons on his shirt or the studs on his jeans. Each time he tried to move his arms, his sleeves squeezed painfully around his upper arms. The shepherd dog panted and groaned under the pressure of the tightness on his body. His clothes began to slowly tear under raising pressure. His fur emerged from under the seams and holes which burst open, cracking and snapping one after another. The floor and the coffee table in front of him moved farther and farther away from him, as if he was rising unstoppably as the ceiling lamps drew ever closer.

"Fuck, what's happening?!"

Panicked, the German shepherd reached for the collar of his shirt, but yet again his tight sleeves refused to grant him much mobility. He didn't have to wait too long for relief, though, since the buttons of his shirt shot off like bullets. The studs of his jeans were also not able to withstand the pressure any longer and flew off clinking, one after another. More and more cracks formed on the thighs of his jeans, from which more of his fur became exposed. His clothes now seemed like a prison to him and his thoughts were focused on a jailbreak. He bared his teeth and clenched his fists. He crushed the berry he still held in his paw. Soon the sofa began to creak under him.

"So tight... need to... get out of... clothes...!"

The rolled-up sleeves of his shirt reluctantly yielded as they were stretched to breaking point. Andrew could only see one way out. Desperately, he tried to fold his arms across his chest, hoping he could use his flexed muscles to break out of his shirt. Grunting, the German shepherd leaned forward and, despite the pain, used all his strength to take up the fight against the unruly sleeves. After a few moments, he flexed his arms so hard that his sleeves burst open and the shirt snapped off his body; the torn cloth slipped off his fur and fell on the sofa he was sitting on. Andrew sighed in relief and dropped back into the back of the couch. What he didn't expect was that the couch gave way under his new weight. The wooden beams inside the furniture splintered and he slumped backward. That was also the moment in which the fabric of his jeans hadn't anyhing to oppose the jerky movement and tore from his legs. Dazed, Andrew lay in the middle of his apartment and didn't get up for some time.

"Ohhh fuck me," he groaned and rubbed the back of his head on which he landed ungently. "What a trip... what was in those berries?"

Slowly he stood up again. He was seeking support from the kitchen counter, as his legs didn't quite want to obey him yet. When he had enough strength to straighten up, he promptly hit his head on a ceiling light.

"Owww!!" The shepherd dog yelped, "Damn, since when does the lamp hang so low here?"

With one closed eye, he looked around and found that he could very well bump into even more lamps, as all of them hung lower than before. Puzzled, he gazed about his apartment.

Andrew's feeling told him that everything seemed smaller than before. He glimpsed the broken sofa in the middle of the room. Startled, his view continued to wander through his apartment and he also noticed that his kitchen counter wasn't as high as it used to be. Before, it reached up to his hip, but now it barely came up to his thighs. Slowly it dawned on him: his apartment hadn't gotten smaller, he had grown! He saw scattered scraps lying in-between the remains of his sofa. On closer inspection, he noticed a certain resemblance to the clothes he was wearing. Hastily he felt himself up and noticed that he wasn't wearing anything anymore; the scraps on the trashed sofa were the remains of his clothes.

"Crap, I liked that outfit... and I need a new couch, too."

Andrew approached the remains of his sofa and searched for clues that might lead him to the cause of his mysterious growth spurt. His eyes fell on the berries he had bought and he knelt down to his living room table to get one of them out of the bowl. Due to the increase in his overall body size, the overgrown berries were now back to finger-food size. He curiously looked at the berry in his paw from every angle, but he couldn't see anything suspicious. A theory formed in his mind -- and he was determined to test it.

With a single bite, he swallowed the berry in one piece and waited. After a few minutes, a tingling sensation began to prickle all over; his fur bristled and he began to breathe heavily. Andrew lost his balance and fell onto his side, panting deeply as his body felt intoxicated. He tried to support himself on his arms and clenched his fists. Every muscle in his body was tense and throbbing. Growling and trembling all over, he lay on the floor, feeling the floorboards rubbing against his body.

As quickly as the intense feeling had taken over, it dulled and subsided. Slowly, Andrew got up and shook his head. Had he grown again? He propped himself up on his knee carefully and tried to stand up carefully. The German shepherd stumbled at first but quickly found his balance again.

He felt himself up. His paws running over his chest, which felt much broader and firmer. He kneaded one of his pecs and it definitely felt like the muscle had become more voluminous. He stretched both of his arms down and pulled them close to his upper body, causing his pecs to protrude prominently. A smug grin embellished on his face at the sight.

Slowly Andrew bent one arm and saw the muscle in his upper arm grow larger and larger the more he flexed it. His bicep swelled so much that it almost touched his forearm. He put his other paw on the rock-hard muscle. The German shepherd couldn't recall having made such rapid progress working out that his biceps could already be this huge, but he took an extraordinary liking to it. He couldn't keep himself from massaging the hard muscle and caressing it, admiring the changes.

"I could definitely get used to this," Andrew thought as he admired his new body, becoming increasingly excited with each new discovery, each time wondering what he might find next.

The shepherd put a paw behind his head, stood on the tips of his toes and arched his back. Eagerly he ran his other paw over his belly. His fingers moved through the furrows and over the elevations of three pairs of tightly flexed, visibly protruding abs. Andrew spread his fingers and leisurely felt out every dense muscle and valley in those abs. With a relishing murmur, he let his paw wander ever lower.

As he ran his paw over his last pair of abs, his fingertips touched the base of his sheath. The German shepherd briefly paused and took up a more relaxed posture again. He reached for his testicles and was both amazed and pleased to see that they had also benefited from the same growth spurt as the rest of his body. While previously one paw would suffice to hold his entire junk, now the same paw barely offered enough space for just one of the massive orbs dangling between his legs. As soon as he tried to put them both in one paw, they pushed each other off again, resulting in a soothing massage. Andrew cupped the plump orbs within his paw, massaging and caressing them tenderly, kneading them with his soft paw pads.

The gentle groping made him huff excitedly and it wasn't long before the tip of his shaft pushed out of his sheath. The German shepherd took his other paw and clasped the base of his sheath with his thumb and index finger. With circular movements he rubbed his sheath, exerting a slight pressure on the shaft inside, which continued to protrude slowly from his sheath. His cock pushed its way out with throbs. His shaft, which narrowed briefly after the tip, increased in girth in the middle and narrowed again towards the knot. His knot was still hidden inside his sheath, but even at its current stage, Andrew was astonished that his erection towered past his belly button.

Glistening drops formed on the tip of his twitching hard-on and trickled down the side. Andrew grabbed his shaft and picked up the transparent, sticky liquid with his fingers. Curiously, he held his precum stained fingers in front of his nose and sniffed his paw. He licked the drops between thumb and index finger and tasted the hint of sweetness. He longed for more. Once more, he firmly grabbed his hard, throbbing cock and milked it from base to tip. Each time he squeezed over the length, he pressed out more precum, which he hastily caught in his other paw. Soon a small puddle had formed in his palm, which the shepherd dog licked up lustfully, not leaving a single drop.

Andrew licked his lips and double-checked he didn't miss a spot. As he enjoyed the aftertaste of his precum, he noticed his paw growing. He looked down at the floorboards which creaked under his size. As his physique gained in both size and weight, his head slowly approached the ceiling; the ground seeming farther and farther away. He ducked his head forward as he tried to make more space as his ears brushed against the ceiling of his apartment. Soon, though, the back of his neck touched the ceiling and he instinctively raised his arms, bracing himself with both of his paws against the top of his apartment, crouching down. As his view was forced towards the ground, Andrew watched his manhood grow even larger, throbbing profusely as it grew.

Finally, the growth spurt stopped. The German shepherd made himself comfortable on the floor as the position of being hunched over with the ceiling in his neck was anything but pleasant. His dripping erection twitched towards him and he slowly enclosed it with both paws. A whimper escaped his muzzle as his paw pads rubbed against his shaft. He usually wasn't this sensitive to touch, but it seemed that sensitivity had grown too. Panting and whining, he was at the mercy of his lust. An unbearable pressure formed in his loins. His swollen knot stretched his sheath and pushed free from its prison. The German shepherd ran his paws down his erection to the exposed swelling and softly stroked its underside. His sensitive hard-on throbbed and a considerable amount of precum spilled over his hard cock. The mere sight of it was enough to get him all riled up.

He arched his back and reached for the wet tip of his cock with his tongue. As soon as his tongue connected, Andrew shuddered. He hadn't expected to be so overly sensitive, but he didn't let himself be dissuaded from his intentions. He craved his own tasty precum. He reached out for his manhood again and licked its tip slowly, relishing it. His increased sensitivity made him grunt heavily, but he didn't stop. Andrew slumped on his back and used his paws to aid him; he grabbed his thighs and pulled them close to his body, allowing him to take the tip of his shaft in his muzzle and enjoy his own seed. Slurping on his massive erection, he closed his eyes and savored all the precum it had to offer.

His rough, wet tongue wrapped around his manhood. The taste of his own juices raised his thirst to immeasurable heights. He wanted more... much more! Andrew couldn't wait for his hefty balls to unload in his muzzle. His anticipation was fueled by the increased flow of precum; his burning passion made him forget everything around him. He didn't notice how yet another growth spurt made his feet push the remains of his sofa and the coffee table to one end of his apartment, while his back gradually climbed up the walls at the other end and made his head meet the ceiling again. Andrew was also oblivious of his cock creeping deeper into his muzzle as it grew with his body.

The shepherd noticed the rekindled increase of size only after his swelling boner had pushed itself so deep into his muzzle that it forced his jaws apart. Surprised, he opened his eyes again and clutched his cock in an attempt to keep it from suffocating him. Fortunately, the growth spurt stopped right when he placed his paws. Muffled groans escaped him, his muzzle jammed by his huge erection. For a moment, Andrew paused. However, when his tongue was wetted again by his precum his mind went right back to milking his thick, throbbing shaft. Since he already held it in his paws, he decided to help it along. He was becoming obsessed with tasting his own juices. Vigorously he rubbed his paws along his throbbing erection. His intense massage caused his heavy balls to rock up and down vigorously as the shepherd continued to indulge in sucking on the tip of his shaft.

Andrew's paws glided over his hard-on, he could feel his climax approaching, and it was only a matter of time until he could enjoy his seed. Accompanied by the slurping and jerking his shaft, he continued to rub precum over his entire cock. Andrew moved one paw further downward to massage his knot; the sound of his precum-guzzling muzzle simply urged him to work harder. With his precum smeared paw pads, he caressed the thick swollen base of his erection, enclosed it in a firm grip and kneaded it thoroughly. A loud muffled groan escaped the German shepherd while he continued to caress his cock with his muzzle as well as his paws. The intense feeling of his warm, wet muzzle coupled with the wild massage of his hard-on and the firm grip on his knot made him grunt heavily. His warm breath swept over his throbbing erection, which complimented all the savage, hormone-driven self-love with a softer touch, the combination of which made him tremble uncontrollably with lust.

Ever more precum sprung from his throbbing canine manhood, announcing his impending orgasm. His moans grew louder, his whine higher-pitched, and his breath heavier. His testicles tightened closer to his loins and were no longer hurled around as wildly as before by how energetically he massaged his erection. He could feel that he had crossed the point of no return. There was no turning back now... He had to have release. He needed release!

Finally, an incredible load of his own juices erupted inside Andrew's muzzle. He swallowed as much as he could, but he could barely keep up with the amount his hard-on pumped into him. He had trouble swallowing every shot when subsequent loads only added on to his already filled muzzle. His juices began spilling out of his maw, covering his chest, seeping into the furrows of his abs and spreading over his sides and onto the floor. The German shepherd tried to suppress his gag reflex as best as he could, but in the end, he had to let go of his erupting cock. He coughed up the excess of semen he couldn't swallow; he gasped for air while keeping his hard-on suppressed as it kept on spurting thick strings of cum.

His hard cock twitched incessantly with each new surge of cum that shot out of it and Andrew had trouble curbing the mess he was causing to his apartment. His hard, throbbing cock shot its charges with such pressure that his attempt to hold it back with his paw only made things worse. All it did was make a bigger mess of things. Like a sprinkler, his juices shot through his digits and spread in all directions, covering the kitchen counter, shelves, cabinets, walls, and windows. Slowly, the viscous juices dribbled down the walls and windows, and long threads formed from the lamps on the ceiling and the protruding edges of the kitchen counter.

It was the most violent orgasm Andrew had ever experienced, all of which, expressed in the loudness of his moans. Each consecutive effusion rocked his whole body. He was completely unprepared for the sensory overload. All he could do afterward was simply to lay there, completely worn out and covered in his own spunk, panting heavily with his tongue hanging out and with both arms lying limp next to him. But yet, his cock kept on spurting cum relentlessly. Without an annoying paw that pushed it down, it was now able to effortlessly cover its owner's face as well. The exhausted German shepherd simply closed his eyes and let the warm seed shower his face as he felt it slowly drip down his muzzle.

Apparently satisfied with its work, the torrents slowly faded and his shaft stopped throbbing. Long, thick threads of his cum hung from his cock tip and joined with the puddle on his upper body. Even the juices from the ceiling drizzled down on him and trickled down his sides. Although he had never cum this hard before, Andrew was glad that it was finally over. He panted for air and his hard-on rested on his cum-coated chest.

His limbs felt a bit numb and he felt a bit woozy. The shepherd felt as though there was a slight but continuous tingle along his whole body, along with a soreness in his arms and legs. Andrew assumed it was the exhaustion that took its toll. Slowly he lifted one arm and wiped the sticky molasses-like cum from his face to be able to see again. He looked down and saw his fur, stained in a copious amount of pre and cum. It was nothing a quick shower couldn't fix, however, the same couldn't be said about his apartment. It looked like the aftermath of a water balloon battle, except those balloons hadn't been filled with water.

"Fuck, I might be better off looking for an entirely new place."

When the German shepherd got up, he was a bit shaky on his feet, probably from the afterglow, but there was another change at the same time: He had shrunk back to a considerably normal size. Andrew heaved a sigh of relief, the things that lust can do to him; he feared that he would never get out of his apartment. However, that would be a less embarrassing explanation as compared to a room stained with cum. Looking at himself, he noticed some changes that stayed; he was now taller by about roughly two heads from before. An even closer inspection revealed a more defined body, one that he wanted. Likewise, his manhood still towered just above his bellybutton, accompanied by a pair of slightly heftier testicles dangling underneath.

Satisfied, he went to the bathroom to rid his fur of all that cum he had gotten on himself. Whether he still took care of his apartment afterward, was fairly undecided. For now, Andrew decided to eat out tonight; fruits were apparently out of today's dinner menu. However, one thing was apparently clear to the German shepherd: he would definitely visit his new favorite store more often.

-- The End --