Evelyn worked her fingers through Cupid's fur. The reindeer was being very cooperative, though perhaps a little enthusiastic. Cupid earned his name through his overly-affectionate nature, always wanting to cuddle even when it wasn't quite the best time to do so. "Cupid, can you stop rubbing up against me?" asked Evelyn as she pushed the reindeer back a little, "You're the one who's supposed to be taking a bath not me." However, the reindeer was incorrigible and pretty soon, Evelyn was almost as soaked and sudsy as he was. "Oh for goodness..." she muttered. It was a good thing the two of them were in the barn where she was able to take off her coat and gloves without getting too cold.
But even so, washing Cupid was no easier as the reindeer refused to stay still. The stag was nuzzling her all over, slowly pushing her backwards towards a wall. By that point, Evelyn was starting to feel rather peculiar, a tingling feeling going through her body. The effect was rather dizzying so she didn't notice when her hands started to change, the tips becoming like hard hooves while fur started spreading up them. Her feet got even slimmer in her boots and standing in them became more awkward. So Evelyn was easily knocked off balance when Cupid suddenly pushed her up against the wall. His sudden blow made her stagger and step right out of her boots. Her feet clicked against the floor as they kept changing. By the time she was backed up to the wall, she was standing on a pair of hooves.
Then Cupid reared up on his hind legs and put his softening front hooves against the wall over her, effectively pinning her in place. Evelyn looked up at the reindeer in stunned surprise. He seemed to have changed, becoming slightly more humanoid in form. His muzzle was shorter and looked more capable of human expression and a shock of blond hair had appeared between his antlers. But from this vantage point, Evelyn was able to easily see Cupid's 'arrow'. She had seen a reindeer's penis before, particularly during mating season. But for some reason, the sight of it was really turning her on.
Cupid slid his cloven hooves down the walls, the individual joints stretching out as they moved until they were four-fingered hands like Evelyn now had. The hands rested on Evelyn's shoulders for a moment before they started pulling upwards, taking the shirt with it. Evelyn just raised her arms and allowed her shirt to be removed. Those same hands soon started fumbling at her pants and Evelyn actually helped him pull down her pants and panties, revealing a dear's tail and a fur-covered vagina. The two of them breathed heavily, their noses filling up with each other's scents. Then Cupid leaned down, though not as far as he would have before as Evelyn was growing in height. His muzzle touched Evelyn's nose and mouth before he awkwardly tried to kiss her.
Evelyn was so lost in the fog of growing lust that she kissed the reindeer back. It was rather awkward at first until Evelyn's face started changing. Her mouth and nose crew out into a muzzle that matched Cupid's in shape. Her ears were growing longer and pointier and her scalp prickled before antlers started budding from them. Evelyn offered no resistance as Cupid probed her nether regions with his cock. When it did make contact with her pussy, he plunged in without hesitation. Evelyn let out a cervine moan as Cupid started pounding into her. Her hoof-hands reached behind her to work on the last piece of clothing that was left on her. She undid the clasp of her bra and slid it off, revealing her fur-covered breasts. The two of them continued mating as their line between their species blurred. Any onlooker would have seen an anthro stag rutting with an anthro doe, though they'd might need to see her breasts to know she was the doe as both had an impressive rack of antlers.
Finally, the two of them let out a bellow as his cock sent his seed deep inside of her and her pussy squirted juices all over his belly. The two reindeer panted before slowly separating. But still, they were feeling very dizzy. Evelyn watched as Cupid stagger. He had a rather narrow build as an anthro and that build seemed to be getting narrower to her. His waist seemed to collapse inwards, but his hips and rear were growing in size. Evelyn watched in silent amazement as Cupid's nipples start expanding, followed by the flesh beneath them, swelling larger and rounder until it looked like he had a pair of quite sizable breasts. An enticing aroma filled the air as a new orifice opened up behind his balls, gleaming wet and going in deep. Evelyn felt a tingle in her crotch and looked down. To her surprise, there was a reindeer cock growing from her pussy had been a moment ago, a pair of balls hanging from beneath. She quickly felt around her new equipment and rediscovered her pussy behind her new ballsack. So now both Evelyn and Cupid were anthropomorphic and hermaphroditic reindeer, only distinguishable from each other by Evelyn still having her black hair and Cupid now having long golden locks.