Stud & Mare

Story by Dogwood on SoFurry

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Note this story is strongly gay minded and graphic but hey, thats why you're here.

This should not be read by persons under 18 years of age.

A Stud and a Mare

By Dogwood

Email: [email protected]

Stu was jostled about as his ute drove down the mishappen dirt track that lead to Mark's old farmhouse. The farmhouse itself had quite a history, dating back to the colonial days where it was erected by Mark's ancestors and had stayed in the families ownership to this day.

How this had remained so was still a mystery to Stu as he knew how difficult it was to keep farms profitable these days. He once remarked about this to Mark who also found it curious but told him that there had been many times when the farm had nearly gone under only to be saved at the last minute by a lucky break.

Such a time of hardship had arisen again and it was because of this that Stu had agreed to spend some of his summer holidays helping Mark's family out.

In not too long Stu had reached the farm and parked himself out the front.

"Yo Mark I'm here" Stu yelled as he got out of his ute.

Mark appeared out of the barn wiping his hands on his overalls. Mark was your typical 19 year old in his last year of high school. The farmwork kept his body in great shape and with his dark brown eyes and dirty brown hair was quite an eye catcher. Stu himself was of similar stock though he lacked Marks definition and had hair that was dark brown

"Hey Stu, great to see you, how you doing today?" Mark said.

"Pretty good until I hit your driveway" Stu chuckled."my poor body got pummelled going down that thing"

"Yeah we've been thinking of paving it but the cost to do so is too much at the moment" Mark replied.

"Things still looking bad then?" Stu queried, he pleasant smile turning into a look of concern.

"Yeah we're having trouble breeding our horses, we just can't seem to get any of them pregnant". Anyhow, Mark said brightening up "lets get to work shall we?". "Sure thing buddy" Stu replied and with that they headed into the barn.

The work that day day was arduous and lasted most of the day, lifting hay bales into storage from the truck. Next came the feeding of animals and giving them their medical shots.

"So whats that your giving them there?" Stu queried as Mark pulled out a syringe full of black liquid.

"It's a growth hormone we got from from the vet. Some of the horses have been losing weight and we're hoping this will stop that" Mark replied as he stuck the needle into an awaiting horses rump.

"Here check it out" he said as he withdrew the needle. Mark moved towards Stu to hand it to him but in doing so tripped on a loose rock. Stu yelped as Marks hand came down, burying the needle into Stu's left thigh.

"Bloody hell dude, watch where your walking" Stu exclaimed, wincing as he removed the needle. "Who knows what this stuff will do to me" . Mark pulled himself up and brushed himself off. "Nah man you'll be fine, sorry bout that"he said.

Stu wasn't so sure "I don't know Mark, for all you know this could be some experimentally untested formula with nanobots or gene altering technology!!". Mark laughed "Dude, are you high? You can get that stuff from any vet in the country. Heck I could make some up myself if I wanted to".

"Oh ok" Stu said relieved. "Anyhow its getting dark, I better head back home, see you tomorrow" Stu said as he headed towards his ute.

"Seeya buddy" Mark called after him.

Thirty minutes later Stu had arrived back at his flat utterly exhausted. After a quick dinner Stu got into his boxers and collapsed onto his bed, falling asleep instantly.

In the dead of night all were fast asleep at the farmhouse. The breeze through the farm ebbed and flowed around the stables as the horses nervously paced their stalls. On the edge of hearing voiceless whispers suddenly could be heard, carried along in the wind which started to pick up speed, streams of an iridescent blue forming within. With a loud neigh from one of the horses the apparition sped from the farmhouse towards Stu's flat.

Stu lay fast asleep as the long trails of blue vapour entered and circulated his room. Drifting closer the trails started to converge on the puncture mark he had received earlier that day, seeping into the wound. Stu suddenly began to heat up as more of the vapour invaded his system, sweat beading off his smooth tanned body. Moaning he started to shift around restlessly, unconsciously removing his shirt as he did so. Next do go were his boxers as he pulled himself up onto his knees and began pulling them off. No sooner than he had done this the mist began to concentrate around his ass and draw itself within him. Stu's groaning grew louder as he fell to his hands and knees, his cock throbbing hard underneath him as the mist circulated faster into his hole. As the last of the mist was sucked into him Stu bucked as his cock erupted and shot his seed all over his bed. Collapsing back on his bed Stu continued to sleep, unaware of what had just happened to him.

The next morning Stu woke surprised to find himself naked and his sheets damp with cum and perspiration. Shaking his head he stumbled towards his bathroom. Passing by his full length mirror he did a double take and looked back at his reflection. The first thing he noted was that his body was now slightly more toned. Muscles he didn't even know he had had begun to show on his body, as well as hair on his chest and legs. Moving his hands up to his neck Stu was also surprised to find his head hair had started to feel coarser and travel further down his neck. His nipples also stood out more, which looked darker and were hard as rocks. His gaze then drifted down to his crotch which caught his eye.

Before Stu was a modest 6" when erect but now what he had dangling between his legs was a sleeping giant. His cock now hung 8" limp and was a shade of colour darker than the rest of his skin tone. Furthermore his balls had swelled to the size of golf balls and now hung much lower to his body. Stu was both impressed and shocked by this discovery but was too shy to go to a doctor about it. In the end Stu put it down to a growth spurt and stepped inside the shower.

"Man I really need one" Stu thought as he smelled himself."I smell like an animal". Turning the faucet on Stu started to wash himself all over. Drying himself off afterwards he started getting dressed for another days work at the farm, annoyed that the the barnyard smell had stayed with him. "Oh well" he thought " I'm going to get dirty anyway".

The day proceeded like it had the day before, though Stu found it considerably easier to lift the bales this time.

"Hey Stu, you been working out lately?" Mark asked, who had noticed his improved strength.

"Nah I think I just hit a growth spurt or something" Stu replied.

"Yeah that would explain the extra hair too"Mark thought.

Stu bent down to pick up another bale. As he did this there was a sudden RRIIP. Mark turned around and laughed to find Stu's pants torn down the middle of his backside, exposing his CK's boxerbriefs to Mark.

"Shutup Mark, its not funny" Stu yelled disgruntled.

"Yeah Yeah all right" Mark continued to giggle, I'll go get you something to patch that up with.

As soon as Mark left the room Stu continued to inspect the damage. He couldn't believe he'd just split his pants, although funnily enough his jeans and shirt did feel tighter. A nicker from outside the barn caught his attention. Walking outside he found one of Marks mare's in the stalls. On seeing him the mare came closer to greet him.

"Hey there, girl" Stu said as he patted the mare's head fondly. As Stu continued to pat the horse he started to feel strange. He stepped back and gasped as his pants tightened a little more, his cock straining against his pants forming a noticeable bulge. A glazed expression came over Stu as he continued to stare at the mare, feeling he wanted something from her but not quite knowing what.

Just as Stu was about to unlock the gate Mark appeared around the corner.

"There you are, found a sewing kit you can use" said Mark

"Uh, Thanks" Stu replied snapping out of his reverie. Grabbing the kit off Mark Stu walked back into the barn, careful not to let Mark see the huge bulge he was now sporting.

The rest of the days work kept Stu busy and his mind off his encounter with the mare. After getting back home Stu felt ravenous and made himself a big salad, the thought of meat just not appealing to him today.

Undressing himself Stu found that his muscle mass had increased somewhat, now forming a clear six pack on his body. The hair on his body had also grown more dense and had spread from his chest to cover his arms and back. Lying down on his bed the days events suddenly came back to Stu. Why had he acted so strangely around Marks's horse.

"Such a nice horse" Stu thought as his hand started to travel down to rub his crotch. "Beautiful creatures". Stu's hardon started to balloon out again, pressing against his briefs. With a POP POP the buttons at the front of his briefs flew off and his manhood flopped out into view and continued to grow.

Stu couldn't resist as he started stroking himself and fondling his heavy pendulous balls, all the while thinking about Mark's mare.

"Oh,Uh..nnn.nnn.NEIIIGH!!" Stu screamed as he blew, his balls churning up and down as long streams of cum shot through his cock. Dazed Stu got up and cleaned himself off, retiring to bed worried and confused about this new behaviour.

The sunlight falling into Stu's bedroom slowly woke him up the following morning. Having trouble keeping his balance Stu awkwardly hobbled towards his mirror to see if their had been any more changes, the bed groaning as he shifted his weight off it.

Stu let out a small whimper as he looked at himself. What was before a case of body hair had turned into a short brown pelt that covered his entire body. His muscles had also grown in more to resemble that of a professional bodybuilder.

A long coarse trail of hair was present down Stu'd neck which he now recognised as a mane.

However the thing that concerned him most was the 12" jet black cock that was now attached to his belly by a thick sheath. His balls had also swollen to the size of lemons and hung halfway down to his knees.

Feeling himself with his hands Stu found that his furry ass was now huge. Feeling upwards Stu was met with another surprise to find a small nub just above his ass crack that wiggled under his touch.

"Oh my God, I'm becoming a horse!" he shouted at no one in particular, his voice now much deeper.

"Any bet it was that fucking syringe" he thought "maybe Mark will know what to do".

Without any further thought Stu started to get changed to go to Mark's. Finding that none of his clothes fitted him anymore Stu resolved to just wear his overalls, which only then just barely fitted him now.

Racing down the road in his ute Stu had to take extra care not to nut himself as he felt his swollen balls rest underneath his legs.

"Mark!!" Stu boomed as he jumped out of his ute and raced towards the barn, tripping up a couple of times as he found it harder and harder to remain standing.

"Stu, you're early..HOLY SHIT what happened to you!!" Mark gasped as he took in Stu's hairy face and larger frame.

"I tthunk, it wos thur syrrunge" Stu gasped, his words becoming garbled as face started to push out a bit to form a short muzzle."Dorr your huve a suppreshhant or someshing?".

"I'll check the supply cabinet" Mark replied " follow me.

Stu followed Mark to the back of the barn, Mark continually staring back at Stu not believing what he was seeing.

"Hurry" Stu pleaded as he felt his body continue to slowly change. Mark frantically rummaged through the medical cabinet above him trying desperately to find something that would help. In his frenzy his hand made contact with a jar of Mare pheromones that they kept for breeding purposes.

Reacting too late, Mark turned away as the whole jar fell down and spilled all over his pants.

"Stu, there isn't anything here that will Stu remained staring at help..Stu?"

Stu's nostrils flared as the mixture of Mark's scent along with the pheromones hit him, remaining transfixed by the scent.

With a snap Stu's hips realigned causing him to full to all fours. Stu bowed his head and let out a deep guttural groan as his entire body inflated a little more. Mark gasped as he watched Stu's ears lengthen and travel up the side of his head, forming a perfect set of horse ears.

Mark started to step backwards when Stu looked up at him, lust strewn across his face.

Without warning Stu leapt at Mark, causing him to topple over.

"Stu, what are you doing!!" Mark yelled as Stu scrambled on top of him, pinned down by Stu's ever increasing weight. Finding what he wanted Stu knealed over Mark and buried his face into Mark's crotch where the pheromones had been spilt.

Trapped underneath Stu Mark's face was positioned right under Stu's ass, which continued to bob up and down with Stu's continued nuzzling. The seams of Stu's overalls started to stretch to breaking point. With a loud RIP the bottom of the overalls split open, revealing Stu's ass which was growing larger by the second. Mark watched as Stu's butcheeks drifted further apart revealing his asshole. His anus pulsating as it grew and pushed further out.A lush black tail sprouted out of Stu's rear and fell upon Marks face.

Suddenly Stu pulled his head away from Mark's crotch and spun around to come face to face with him. For a second neither of them moved. Stu remained staring directly into Mark's eyes as he continued to breath in and out heavily.

"Ssstu, what are you doing?" Mark whispered to terrified to do much else.

Averting Stu's gaze Mark looked down to find Stu had completely filled out his overalls, every inch now stretching at the seams. A slow movement caught Mark's attention as he looked down Stu's chest. Mark watched as a huge bulge started slithering up towards him inside Stu's overalls. Looking up Mark now recognised the intense look of lust on Stu's face. With a POP,POP POP the few remaining buttons flew off the front of Stu's overalls, his large equine cock falling wetly onto Mark's chest, leaking precum.

"Oh god Stu don't do this!!" Mark yelled as Stu groaned from finally releasing his huge stallionhood. Fumbling with Mark's belt Mark tried to push him back but was unable to with the massive amount of power now contained within Stu's arms.

Stu then tucked his hands under the hem of Marks pants and with one heave ripped them right off. Flipping Mark onto his hands and knee's Stu then made quick work of Mark's boxers, the one last thing keeping him from what he so badly wanted. With a snort of triumph Mark's smooth tanned ass was revealed.

Mark whimpered as he felt Stu start to probe him with his cock, trying to clench his ass tight as it neared its target, oozing precum inside Mark's cheeks.

With his ass now completely lubed up Mark couldn't fight anymore as Stu slowly started to penetrate his hole. Yelling in pain Stu sunk himself deeper and deeper into Mark until Mark could feel Stu's huge balls slap up against his buttocks.

Slowly at first but then gaining tempo Stu started to piston himself in and out of mark, his moans of pleasure soon replaced by nickering and snorting. With a sudden explosion Stu's overalls flew completely off him. From the waist down he now resembled a horse. Clinging onto Marks back for support he found his grip start to slip as his hands started to reform into hooves. With a CLACK CLACK Stu fell onto all fours as he continued to plough Mark. The pain Mark was experiencing rapidly started to subside as it was replaced a totally unexpected feeling of pleasure.

Amazed Mark looked down to find that his own cock had started to rise, bobbing up and down with each of Stu's thrusts.Mark started to spread his ass out wider and buck into Stu as he started to enjoy the feeling of being fucked.Stu started to tense as his hormone crazed mind started to feel the orgasm approaching.With his neck thickening out Stu cringed as his face extended further out and his teeth enlarged to dirty white molars.

"NEEIGHHH!!" Stu screamed as his transformation into a horse was complete, his throbbing cock bursting as it shot it's load into Mark, filling him to the brim. Pulling out Stu trotted around the barn a couple of times as his still erect cock flung jism everywhere, marking his prize. Stumbling here and there Mark watched as Stu collapsed into the hay bundle unconscious.

Mark remained kneeled on the floor and gasped as he felt his own orgasm build to an intensity he had never known before. Clenching the floor he let out a roar as his cock spasmed and shot out his load. His spurts continued as he remained on the floor unable to do anything due to the shock on his system. With a final heave he felt a powerful burst leave his system. The last image he saw before he slipped into unconsciousness was a writhing stream of blue vapour shoot out of his cock before eerily drifting out of the barn, never to be seen again.

Later that day Stu awoke inside the hay bundle to find himself naked but human again, his overalls lying tattered closeby. Trying to remember what happened Stu found that he had no recollection of what had happened over the past 3 days. Turning around he found that Mark too was asleep and was also butt naked from the waist down. Deciding he did not want to be here when Mark woke up Stu quickly grabbed some spare clothes of Mark's and the remains of his overalls and raced to his ute.

The sound of a ute racing down his driveway slowly woke Mark up. Groggily looking around Mark also realised the events of the last three days were missing from his memory. All traces of the buggering he had just received had vanished from the barn. The only things that remained were that his pants were down. Rubbing his ass he found it to be a little sore and dilated. Unable to make sense of it Mark picked himself up and continued his work, the oddity he had just encountered slowly erased from his memory over the passing weeks, while the magical bond between the two remained dormant, waiting.