Night of the Werehorse

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And after keeping this up on Patreon for about a month, it's time for this story to hit FA:

This is a commission for - this was originally intended to be a sequel to Job Change, but the commission info was never noted to me, only briefly talked about. Since they were going through a few issues at the time, they were kind enough to let me use it as a free slot for me to work on anything, and I decided to go with an idea I had been sitting on for a few years now.Quite some time ago, sttrack37dicon was working on a werehorse TF animation that ultimately went unfinished. It was a fun video, and I wanted to do a written homage for it, but I never got the chance or mood to do so. Since Soratos let me have free reign over the commission in the end, I decided to get this written out!

I had made a recording of the animation prior to Flash being discontinued (And you can find it here: https://drive.google.com/file/d/1KWgENr7xPhQ6pV6Qp3dlnIbCx5vsqdeS/view ), and worked on it from that, trying to keep it as close to the animation as possible, barring a couple of minor changes here and there (That and most of the last minute of it was rough storyboards, so I did my best to adapt from those as well XD). I'm quite happy with how this turned out, and I hope you all enjoy it as well!Who knows, maybe some time down the line I'll commission the guy for an image based on this story! Doubt I can go the full sequence route, but even a singular picture around the 50-75% mark would be great :3

And just a reminder, this story was a Patreon exclusive - I normally post stories up there around 1-3 weeks before they go live on FA, which you can access for just $5! https://www.patreon.com/ShadeTheRaven Maximus (C) Myself

Posted using PostyBirb


The front door opened wide as a lone figure stepped inside, flicking the lightswitch near the door. The lights briefly flickered for a couple of seconds before turning on, the man locking the door behind him, hanging the keys on the table opposite the doorway.

"Well, that was something I could have done without this evening..." Peter muttered to himself, placing a shoulder bag down by the stairs, unpacking a few items of shopping as he made his way to the kitchen. He placed the items away in the fridge before turning his attention to the sink, walking over to it. Turning on the warm water, balancing the temperature by slightly turning on the cold tap, he ran his arm under the sink, letting the water run over a large bite mark close to his lower elbow, washing away some dried-up blood in the process.

"I mean what even made it do that?" He mused, reflecting on what had happened - he had come back from visiting a friend of his, picking up some food on the way back. He decided to take the usual shortcut to get home, bypassing some of the busier streets in return for cutting through a field that was part of an old farm. As he walked along the path, he noticed a horse curiously eying him up the whole time - it wasn't anything new to him, there usually was a horse or two roaming around, but tonight it was looking at him. He thought he'd try to be friendly to it and offer it a carrot he brought from the supermarket, but as he did so, the horse sprang forward and bit his arm, hard enough to draw blood. After an initial bout of cursing in pain, he made his way back home, not wanting to wait around in case the horse went for seconds.

"If I ever see it around there the next time I take that route, I'll have to keep my distance - or at least call someone who might be able to take care of it..." He turned the taps off - the bite mark was fairly prominent, two small rows of broad teeth marks showing up along his arm. "I hope it wasn't infected with anything, the last thing I'm gonna want to do is book in for the emergency room!"

He would have put a plaster or bandage around the wounds, but given how they had stopped bleeding for now, it was probably best to give it some air. With nothing else to do, he made his way over to the sofa, glancing at the clock, the time reading 9:28pm. "Guess I might as well see what's on the TV or find something to do!" He sat down on the couch, laying back as he carefully rubbed around his injury.

As he sat down and contemplated his thoughts - mainly what he'd do if the wound didn't show any signs of healing in the next few days, or just pushing that to the back of his mind for now and, at the very least, focus on that in the morning, the clouds in the sky above slowly parted, revealing the full moon. It was technically the first full moon of the spring, and in some areas, they always said it'd bring along great change. Of course, he never really believed that - if it were true, then surely some kind of 'great change' would have happened many years ago.

"I just hope if I have to call for help for that horse, it doesn't try anything funny with anyone else..." He thought to himself momentarily before his thoughts turned to just how warm he was feeling all of a sudden. "Whew... I don't think I remember setting the heating up this high..." He wiped a few beads of sweat from his brow, using his shirt as a makeshift fan as he tried to keep himself cool. "That's really all I'll need if the heating's going up the wall as well, I can't sleep inside of a sauna!"

He continued to fan himself, his stomach rising up and down as he took a few short breaths in an effort to help keep himself cool.

It was at that point, things took a turn for the unexpected.

His penis suddenly squirmed about in his pants, initially unnoticed by him. It pressed against the fabric of his clothes, leaving a small indentation in them. The indentation then doubled in size before growing a little bit more. It then swelled again, the size of the bulge in his fabric growing more obscene by the moment, yet it still went unnoticed. The growing flesh then slid downwards, putting more pressure on his pants, as if trying to escape.

"Hrm?" He slowly stopped fanning himself as he caught sight of his tented erection, seeing it push further and harder against his jeans. The button pinged off the front of them, the zipper being pushed down as it struggled to contain what was growing inside it, his underwear also straining to keep it confined. Moments later, his shaft sprang free, fully exposed.

Peter looked at it for a moment - his dick seemed to be both taller and girthier than what he remembered it to be, and whilst he wasn't a stranger to random boners, he didn't recall ever having one burst through his pants like that before.

"Heh... random time to get hard... eh, why not?" He smirked - he had a feeling it wasn't going to go down of its own accord any time soon, so why not get it out of the way sooner? He reached in to adjust his pants, scooping his balls out from under the fabric so they weren't constricted, and he placed his hand around his spear, getting a good grip of it as he slowly stroked himself up and down.

"Unnnf... It's... really sensitive tonight..." He groaned, pacing his stroking to a steady rhythm, closing his eyes as he pleasured himself, forgetting about the earlier incident. Right now, he felt too good and too horny to worry about such matters. In his mind, he pictured himself getting jealous stares from both men and women, eying up his improved size.

"Ohhhhh... they're jealous of this stud..." He snorted, his stroking picking up speed as he envisioned himself getting some mouth service, being sucked off by a large, horny mare... wait, mare? He shook his head, trying to get a clear vision of a lovely lady blowing him, but she quickly morphed back into a large, equine figure.

"Uh... hhrff..." His balls responded to that thought by plumping up to double their size. Then, with each breath he took, they started to grow larger. Slowly. Inch by inch. He let go of his cock, seeing it fall forwards... and then, with the beat of his heart, it surged in size by an inch. Then, just like his balls, it grew, twitching and bobbing of its own accord as it stretched larger.

"What... what in the... hh... hhhaahh!" He gasped as he was suddenly brought to a powerful orgasm, the head of his shaft expanding slightly as his human seed was swiftly expelled, splattering across the table. The force of the climax was so strong, it caused him to stumble forwards, falling from the sofa onto all fours. His balls jiggled as he caught himself from falling flat on his face, panting from the powerful orgasm. Despite the swift climax, looking down he saw that his dick was still rock hard, throbbing, resting closer towards the middle of his chest.

"Fuuuuck... oooh fuuuck..." He huffed, staring up his erection, his voice sounding ever so slightly lower. "What... what was that... and why do I still feel so... ooohhh..." He groaned, feeling a swelling sensation in his rear. Just like his shaft, his rump slowly pushed outwards, muscles growing larger, firmer, pressing tight against the fabric of his trousers. With every beat of his heart, his ass continued to grow, the cheeks swelling larger, wider, as if someone was pumping air into them.

"God... why is this making me feel..." He trembled, his growing butt expanding further still, starting to put further strain on his clothing. "Feel... so hornnnneeeiiiighhhh!!" He threw his head back, the sound of tearing fabric assaulting his ears as his derriere grew too big to be contained. The seat of his pants split down the middle, his underwear shredding in various places, the fabric putting up a good fight in trying to keep him concealed. Eventually the damage was too much, and they split apart, the torn fabric slipping down his legs as his large behind was finally exposed.

"Aahhh... mmrrhhh..." He moaned, relieved that the feeling of constriction had now passed. However, glancing backwards, he saw that his ass was still growing bigger by the second, pitch-black fur spreading across his hind-quarters. "It... it won't stop growing..." He commented, watching the shape of his tush become a little bit squarer overall. Between his growing cock and expanding ass, it slowly dawned on him just what was going on.

"I... I'm turning into a horse..." He said. "The damn thing bit me, and now I'm turning into a goddamn horse..." He snorted. "When I see it again, I'm gonna fuck it silly... I mean, give it a talking to... urrf..." He felt his legs shift slightly, his hips readjusting themselves into a configuration better suited for a four-legged animal. Of course, it had the added effect of making his now-equine ass look even bigger still, and the cheeks parting allowed room for a small, stubby tail to start growing free from the base of his spine. Just as he thought that the intensity of the changes were dying down, his legs rather suddenly packed on muscle, his thighs bulking up considerably in the space of a few seconds.

"Hhhreeiigghh..." He slumped forward, his dick still standing proudly at attention, idly throbbing as he tried to catch his breath - considering how most forms of media loved to show transformation as immensely painful bordering on body horror, a part of him was quite amazed - and just more than a little confused - that his changes felt oddly invigorating. The fact that he was down on his hands and knees was from excitement rather than pain - as well as the obvious structural changes - made that quite clear.

"Ooooohh... this.. This shouldn't feel as good as it does..." He moaned, his voice sounding lower still, having dropped a few octaves. His voice now had a powerful bass to it, but it had the side effect of having equine vocalisations being audible underneath it. He started trembling as he felt a strange sensation in his hands. The thumb on his left hand was starting to shrink, receding back into it, whilst his middle finger swelled larger, the other digits also starting to retreat back into the appendage.

"Damn it... I can't lose them just yet...!" He propped himself up with his other hand, which was slowly starting to mirror his left, as he gripped his cock in his mutating grasp, furiously pumping it up and down. "Hhrrrghh.. Ooohh... oooh yeah...!" He panted and whickered, not letting the impending thought of losing his hands stop him, at least not at this moment. Of course, given what was happening to him, that method of self-pleasure would soon be lost, his pumping and stroking slowing down as his hands became increasingly less dexterous, not helped in part by his fingers shrinking back into his hand, with the exception of the middle digit, which in turn grew larger and broader, as if growing to fit the rest of his limb.

He thought again about putting it to good use, imagining a hot, sexy woman taking it all in. Once again, his thoughts flickered between riding a lovely lass, and riding a powerful mare - those thoughts did cause him some form of concern, but given what he was slowly turning into, it made sense that said thoughts would be gearing towards a more equine orientation, and right now he was too horny to care about what he was fantasising sticking his dick into. The thoughts kept him going as he tried, rather futilely, to masturbate further, the one remaining digit now too stiff to properly move.

He lost his grip on his cock, bringing his hands out in front of him. The nails on the remaining digit became thicker, darker, spreading out and wrapping around the tip of his 'finger', now fully resembling equine hooves more than anything.

"Hhrrrrrhfffhurrrrrrruuuuucckk!" He snorted in disapproval, slumping forwards, his twitching cock still aching for release. His stomach ballooned at that moment, causing it to bump against his dick, a small splatter of pre spurting forth from it, landing inches from his face - his spear was so big at this point that it just about reached his pectorals. "Ghhhoooood... I.. neeeeeiiighhh... to cuuuuumm...!"

Another odd twinge ran through him, this time targeting his feet. He had a feeling that there probably was going to be some more growing involved, and having fallen onto the floor, he wasn't in the best position for it. Still, he had to give himself some room, pushing his sofa back with his feet. Given how large and heavy the couch was, it was amazing at just how easily he was able to push it aside, but that could be due to the fact that his legs were showing some impressive, albeit furry, muscle.

"Uhhh..." He groaned, feeling his feet throb inside his shoes. "Fuuuuuckk.. I should have... taken them... hhrreiigihh... oooohhhhhffff...!" He felt them pop and stretch, his heel rising up out of them whilst his toes pressed against the front of his shoes. Even his socks were straining to contain his growing feet, though they weren't as urgent a matter as his shoes - he knew that he'd need to replace them where they were getting a bit worn, but this isn't what he had in mind.

The toe cap was soon separated from the soles, his changing, misshapen feet pushing through them. Just like his hands, the middle toe appeared to be growing larger and wider, whilst the other toes receded back into the foot, the nail on the remaining digit hardening, wrapping around what was now his rear hooves, the remnants of his shoes still stuck around them.

"Hhrrh... hrruhrffhh..." He trembled, the muscles in his legs taking the time to develop further, his thighs packing on extra muscle. Even his balls took the opportunity to grow again, sagging down to where his knees were. The developing tail grew out an extra inch or two, sprouting a neat little tuft of fur.

"Ghrrrooohhhtttta... try and geeeiiighhhtt up..." Peter's body was becoming increasingly more alien to him, but he needed to try to at least move somewhere so that the continuous growth wouldn't cause him too much discomfort. He thought about trying to find his phone to see if there was anything he could find out about what was happening - or at the least record it - but unless he wanted to try and operate it with his nose, that wasn't gonna happen. Even if he wanted to try to call someone, the fact that it was getting increasingly harder to talk would prove a problem.

He stumbled as he tried to get up onto what was now effectively his hindlegs, his forehooves clopping down against the table as he used it to stop his fall. "Gotta... geeeeet out... fiiiiinnd help... find mateeeiiigghhh!" His train of thought derailed thanks to his balls once again swelling in size, his dick gaining two more inches as well. The tuft of fur that had sprouted on his tail grew outwards, forming into a flowing black tail that reached the floor. He struggled to maintain his balance - his body was now rather bottom-heavy, and his legs hadn't changed enough to properly support that, and another surge of growth in his ass caused him to falter, bringing him down on his side as the contents of the table he was balancing on - a vase of fake flowers, a stack of magazines, and several remote controls - were upended along with the table itself, crashing down alongside him as he rolled onto his back. As a small plus, what remained of his damaged shoes went flying off his feet in the process.

"Hhrh... hrhrhr..." He groaned, watching as his cock and balls took that time to once again develop further, as if teasing him now that he was lying on his back. He panted lustfully, looking at the meaty log, still standing at full attention. "Neeiiighh... neeeiiiigh!" He tried to voice his frustrations at not having hands to tend to his ever-growing need, but he could no longer form the words to do so, his vocals reduced to deep, lustful neighing and whickering.

He continued to look at his shaft, feeling that odd twinge in it that was a precursor to every other change. His stomach swelled again, filling out into a large, equine belly, just as the foreskin on his member pulled downwards towards the base, attaching it to the underside of his stomach. Now sporting a sheath, his dick surged forwards, moving up and past his pectorals as it did. The flesh turned a deep black to match the fur that had overtaken most of his body, bulging veins showing along it whilst a girthy ring formed in the middle. The head of his penis followed suit, the bulbous, mushroom shape flattening, flaring outwards, his length now perfectly changed into a massive horse cock.

Peter really couldn't believe his eyes, a faint smile crossing his lips as he looked at his tool. Another twinge caused the head of his great dick to rub against his cheek, smearing precum over it.

"Hhrrh..hrrhrhrhr..." He whickered - he was almost hesitant to do so, but with no hands and no-one to help him, he was otherwise out of ideas, leaning in just a little bit as he started licking under the flared head. His prick bobbed up and down from the attention, drawing another moan from his mouth.

Whilst he started to service himself to the best of his current abilities, that familiar sudden once again returned to his ass, making him quiver in lust. His rump was already large enough to draw attention from anyone, and yet it continued to grow, the cheeks not only widening, but pulling apart, revealing his anus. The tender flesh around his butt darkened as he felt it pucker, growing bigger and rougher, relocating to sit just under his tail.

"Mrrhh.. Mmrrhh... mrrrrhhrhr?!" His licking was brought to an abrupt halt as his ribcage and chest started to barrel outwards, his shirt, which had escaped damage up to this point, straining as it attempted to hold his expanding frame. The fabric couldn't put up as much resistance as his trousers, his top splitting open down the middle, nipples briefly exposed before vanishing into the hide-like flesh, overtaken by glossy black fur.

"Mmrhh.. Hrhrheighh...!" He snorted in frustration, needing to cum now more than ever, but thanks to his bigger chest - and his still human head and neck - he couldn't get at it. Thankfully, at the very least, his body was starting to run out of things to change, and a familiar feeling was filling his face fast. A long, drawn out moan left his mouth as his nose darkened, sinking into his upper jaw, the nostrils flaring wide whilst his face bulged out in places, his ears moving upwards, growing to points. He rolled onto his front, huffing and panting, his body suddenly exploding with new growth, his frame doubling in size, fully destroying his shirt in the process, bringing him to the stature of a Clysdedale, only bigger.

He whickered and whinnied, his neck stretching longer, the muscles developing thicker, overall becoming more flexible whilst his silvery hair grew down alongside his elongating neck, a flood of black filling it as it stopped around his bulky shoulders. His jaws pushed forwards, his face stretching out longer, the last of his humanity slowly being stripped away as his eyes moved towards the sides of his head. He let out a neigh as his teeth moved towards the front of his mouth, growing larger and broader, aiding in giving him a powerful bite whilst his longer, thinner tongue licked around his chompers and his darker, almost rubbery lips.

His forehoof moved to attempt to stroke his cock once more, rubbing rather futilely against the underside of his hoof. His dick surged in size one final time, now reaching out past his barreled chest, and with his longer neck and snout, he knew that he'd be able to give it some more attention. That would have been the case, if it weren't for his rather pitiful attempts at stroking himself off pushed him over the edge.

"Hrh.. HRHRHR..." The horse snorted and huffed, his dick throbbing as he reared up onto his hind legs, forehooves kicking at the air. His shaft throbbed and bounced up and down before firing off a thick, goopy rope of cum clear onto the other side of the room, running up the wall.

"NNNEEIIIIGGHHHH!" Drool flew from his maw, his eyes shifting from a soft yellow to a fierce scarlet, the pupils stretching horizontally. His hooves landed back down on the floor with a heavy thump, the head of his cock flaring out further. He left weak in the legs from the powerful orgasm, the horse sidestepping to his right before cumming once again, firing off another load that was no less thick - or potent - than the last.

"Hhrhrh... hrhrhhr..." He panted, coming down from his high as the human - now a great, hulking beast of a horse, covered from head to hooves in fur as black as midnight - looked around at his surroundings. He noticed that the window was open, a smirk crossing his lips as he approached it. He was just able to get through it without causing any structural damage as he took off into the night, looking for some fun.


The next night, Peter was preparing himself - he knew that tonight was another full moon, and he was giving himself ample space for the changes, as well as ensuring that he was fully naked so he didn't ruin any more clothes. Additionally, he had set up his phone on a tripod, alongside a handheld video camera, both of which had been put onto record what was about to happen.

The previous evening felt like a dream, albeit a very naughty one - he had willingly brought along a pair of humans into the herd, not only that, he had encountered the horse that had bit him, and things did get intimate between them real fast. Hey, it was only fair that he thanked him for the life-changing bite, after all.

"OK, everything's set up and ready to go..." He waited anxiously for the full moon to peek through the clouds once again. When it did, his body became flushed with warmth once again, a smirk crossing his lips as his cock grew hard, his hand brushing against it as it did.

"Mmrrhrhrh... ooooh, my friends are going to lose their minds when they see this for themselves!" He chuckled, wasting little time as he teased his growing shaft for the camera, smiling almost wickedly. "Maybe they'll wanna come along for the ride as well - I can't spend every full moon on my own~"

He was more than prepared this evening, making sure that every second of the change and every juicy detail was captured on film. He'd probably have a hard time shutting off the cameras after the fact, but he knew that it'd be worth it just to see his pals freak out when they saw the footage, and if they didn't believe them, he'd be more than happy to pay them a personal visit.