“You know, naughty girls like yourself tend to get punished. At least… They do around these parts.”

That was what the old man had said to Sam, and she was still pissed off. The redhead growled and thumbed one of her piercings, glowering at her drink. “Oh, great idea. ‘Go backpacking, Sam! You’ll really find yourself, Sam!’ Fuck off, Jenny!” She slammed the pint back, drinking deep of the amber nectar.

It was some sort of local beer, a kind that she honestly thought was better than anything she’d had before. And that wasn’t the bad mood talking either, it was hoppy with just enough bitterness. She licked her teeth to savor some of the taste, humming with content.

“But hey, I’m sure I’ll be able to discover myself all the way to the fields when I’m stuck in a room on another rainy day!” Sam grunted, the beer starting to get to her head. She hiccupped, starting to feel… Funny.

Well, nothing another beer couldn’t fix. She popped the cap on another bottle, downing it and hopping onto her bed, kicking her bare feet. With them raised off the floor like this, she wasn’t able to notice that her feet were beginning to grow numb, darkening.

Her toes were slowly beginning to merge together, hard enamel covering them like ink spreading across canvas. Wherever it touched lost the shine of soft human skin, and gained the dull ebony of hooves. They clopped against the frame of her bed, though she didn’t quite hear them.

As if to remedy this, her ears began to stretch out, growing larger and longer. They twitched as they slid towards the top of her head, and she could feel them swaying in the humid rainy air. A hum passed through her neck as it began to stretch, and the redhead chuckled to herself.

She licked her teeth again, this time feeling a little more tooth than she was used to-namely her front teeth. The girl blinked in confusion then hopped from her bed, letting the bottle fall to the floor. Her new hooves left her a little off-balance, and she wobbled unsurely.

“Whoa… Must be a little stronger than I thought.” Sam giggled, clopping towards the bathroom mirror. That was odd, her shoes didn’t sound so loud on the floor before…

Before she could give it more thought, she was face-to-face with her reflection. It made her blink in surprise, then again in shock. Her ears were long and huge atop her head, almost like rabbit’s ears-though as she watched, they began to grow a coat of coarse, grey fur rather than the soft white fur she’d expected to see on such ears.

Worse, her neck was a little longer, and her teeth were… Well, blocky to say the least. She opened her mouth and gawped at the sight of a set of ugly buck teeth, things that looked more at fit on an animal than on a person.

“Oh my GoHAWWd!” Her neck jerked forwards, lengthening as she brayed. Her eyes widened, and she looked to the mirror, pressing her fingers against it, feeling how it was thicker. She could also feel the coarse short hairs of stubble settling along the thick length of her stretching neck, which grew another spurt.

With it, she felt something bubbling up from her throat-even as her nostrils began to flare. Sam tried to fight it back, breathing in deep through her nose and watching her reflection as her nose flared out, broadening before her startled eyes.

Then a sharp pain stabbed at her backside, distracting her efforts. “GUHEEEAWW! HUEEAWWGH!” She brayed madly, spit flying from her mouth as it shot out from the rest of her head.

The redhead yelped in surprise, looking at her almost simian-like face. She had a muzzle now, and it was stretching further and further by the second, going all the way from human to equine. The girl tried to fight it, pressing against her growing snout with both hands and struggling to keep the growth from progressing.

It was completely useless, she realized much too late. By the time she removed her hands from her face, she had a stretched face, one that sprouted a lush coat of grey fur, giving her the look of a redheaded donkey with piercings.

“No! How can I bEEAWWW HEAWWW!” She brayed harder, her chest convulsing. The girl could feel her shirt tightening on her frame, and she looked up to the small mirror only to grunt. Her longer neck was making it hard to see her whole reflection.

There was another mirror, however. It was in her bedroom, which wasn’t too far away… She turned her long head towards it, moaning as her eyes slid across her changing skull to its sides. Soon Sam sported the wider field of view of a prey animal, seeing at her sides perfectly, though having to concentrate to see what was before her.

It was dizzying, but she still stumbled towards the bedroom, clopping her way past the doorway and noticing her shoes were still there. She looked down with a whimper to finally notice that she sported two thick, blocky hooves.

“HAAW!” She bellowed instinctively, grunting as her chest barreled out further. Desperately, the redhead fell into the bedroom, landing on her side on the bed. The closet door was open, letting her see her full reflection in the walk-in mirror.

She didn’t like what she saw. It was like someone had combined a donkey and a person in photoshop, or rather like they were busy combining one because the changes weren’t nearly done yet. She watched and felt her arms and legs thin, beginning to stretch out as she rolled onto her back, flailing at the air.

“SwomHAWWn! PuHEEEse hAWWlp!” She brayed as she screamed, rolling onto her side again, then onto her belly. Her shoulders and hips loudly popped as she did, and the redhead gasped as she realized she could no longer walk on two legs.

Another look to her reflection confirmed the worst: she was closer to a donkey than she was to a person, and she watched as she shakily hobbled towards the mirror. Her belly bloated as she moved, and it soon brushed against the bottle she’d left on the bed.

It was singularly distressing to her to become fat, somehow almost more distressing than the fact that she was becoming a donkey. Sam had never been beautiful, or athletic… But she’d always prided herself on not going to pasture, either.

Then again… She might soon be literally going to pasture. She brayed in hysterical amusement at the thought, clopping from the bed until she was closer to the mirror. Her hair began along the center of her head, the red locks simply shedding from her scalp everywhere else. It was leaving her with the distinctive mane of a donkey and with the hairs came the distinctive musk of one.

She could smell it easily with her large, changed nostrils. She brayed, peeling back her lips with the motion and exposing her changed, thick buck teeth. The jenny-to-be sobbed and looked at her reflection as her human lips thickened into the coarse lips of a donkey. She chuffed them loudly, noticing something behind her.

There was a dark object, something swaying just in her peripheral vision. She turned her head curiously, inwardly shuddering at how much of her back she could see-and how much of her backside she could see.

Sam watched as her petite butt swelled larger and larger, the growing motion distracting her for a moment. Then that object flicked into her line of sight again, and her eyes widened in shock. There was a tail sticking out from her shorts-her tail.

Suddenly another fit of braying overtook her, and Sam squeezed her eyes shut. “HEEAWW! HAWWW! HEEE-HAAAWW!” She kicked her legs instinctively, braying and drooling. The sound of tearing cloth filled the room, along with the thundering of hooves.

Finally, it passed, and Sam opened her eyes to find a fully-grown jenny in the room, standing atop a pile of what was once Sam’s clothing. She opened her mouth and the jenny opened hers, licked her lips and the jenny responded in kind.

Then she ground her pussy back against the bedpost. It was a sudden urge, but one that was oddly pleasurable. Her thick donkey sex seemed to take special joy from this, and the girl began to pant hard. Her long, thick tongue spilled over her coarse lips, and she glanced up to the mirror, seeing herself… another donkey…

No, it was getting harder to think… She blinked her large, dark eyes. The girl had trouble recognizing herself as such, finding it instead easier to see herself as an animal. That was, after all, what she was. Right?

Stupidity claimed her memories, her life, her every thought. Soon, all that she cared about was how good her pussy was feeling, and how much the bedpost sated her urges. She jerked her head with the motions, imagining a jack taking her, and taking her hard.

But… She wasn’t a jenny, she was a human… The glint of her piercings on her muzzle let her remember a fraction of who she was, and she looked to the animal in the mirror, unable to stop herself from moving, from fucking herself.

Still, she could try and remember… The girl forced her blocky muzzle to speak, or at least to come to some close semblance of speech. “Uhyymuh Ssthaammuh…” She tried to say her name, but it was so hard to make her muzzle work, to make her tongue work properly.

“UheeEEEemuhhh… Awww… Heee… Huuuh…” The intelligence faded from her gaze as quickly as it had returned to it, lust overwhelming her momentary return. She looked the donkey in the mirror, watching as the spark of intelligence began to fade in its eyes.

It faded, faded, until finally it vanished completely. All she had was the dull glint of an animal, and not a bright one at that. She was left a moron, a completely imbecilic animal-and it was enough to get her to slip past her last barrier, climaxing hard and gushing along the bedpost.

“HEEEAWWW! GNHHAAAAW!” She brayed, spittle flying from her muzzle before she collapsed onto the ground in a spent heap.

In the morning, the old man who’d insulted her would come to her room, accompanied by several farmers. They would take her and lead her to her new pasture, to the jacks who would fuck her just as she’d imagined.

But for now, the jenny who say atop Sam’s clothes rested. She dreamed deep of the day her jack would claim her, blissfully unaware that the day would be close at hand.