Dog

It was day just like any other day, and Zoe was at her friend Brianna's house. Zoe was very pretty girl with blue eyes and a below average height and long brown hair. They were talking boys and gossiping about girl things when Brianna's new German Shepard, Rex, came into the room. Brianna told Zoe how he was a stray and was so friendly they had to keep him. Brianna left to run an errand, leaving Zoe to play with her dog. Zoe started playing a little rough with the dog getting him excited. he was just playing but bit her drawing a bit of blood. What she didn't realize was that this dog was a magic animal and passed some of its saliva had gotten in the wound. What she did notice was the pressure in her fingers as the started to shrink and become stubbier while her nails turned black as well as became thicker and thicker. These same changes were happening on her toes as well while she fell to her hands and knees. Her whole body frame started to shrink along with her limbs with her knees cracking and bending exverted instead of inverted. It was then that Zoe felt a nub grow just above her butt before it grew out  covering her newly shifted vagina. Her spine cracked and  her shoulders were pushed above the rest of her body as she felt a pressure in her facial area. This culminated in Zoe's face pushing out into a muzzle with her teeth becoming sharper canines. Her nose also became black and flatter and her ears became floppier and pointed. Her once supple breasts shrank and row of teets formed on her body. Zoe's brown hair then attached to the pack of her neck and wherever else it reached while shaggy white hair covered the bottom of her neck and underbelly as tan gray hair also appeared with brown hair all over her body. She managed to wriggle out of her clothes and tried to speak but only barks came out of her mouth. She was, by all means, a collie bitch now, and she forgot about her one new other problem in the room.......

Rex quickly rushed over and started smelling her ass.  She moved away, but Rex kept following her. She tried to nip at him and that worked, but only for a bit and he was back at it. Rex knew what he wanted in his animal instincts and and that was Zoe. He jumped on top of her back after that. Zoe knew what he was trying to accomplish and tried to move away but the dumb animal ( he's one of those animals that didn't realize he was endowed with powers) was bigger and stronger than she was being a male and a bigger breed. He met his mark and entered her awaiting snatch causing Zoe to howl out loud. Rex di his work and began humping her, fucking her thoroughly. Zoe couldn't believe it, she had been a beautiful human girl  just minutes ago and was now a bitch being fucked by her best friends dog. Rex finally shot his seed into her and his penis formed the typical knot in her pussy, leaving them stuck together. It was then that Brianna entered her room and saw her dog balls deep in a new collie that was in her room. She saw Zoe's clothes on the floor and seeing the gaping holes in her panties and jeans as well as the shaggy hair within her clothing. She quickly put two and two together and figured out that Zoe had somehow been transformed into this new dog and worse, her dog had bred her. When Zoe was eventually freed Brianna cried and apologized that this had happened to her and that she would try to find a way to turn her back. She decided to not tell anyone lest they think she was crazy or worse blame her for Zoe's disappearance. Zoe would eventually give birth to a litter of puppies due to her and Rex's little escapade, and the cycle continued more times as brianna couldn't very well have her spayed. Brianna could never find a way to change friend back, and worse, one day she was bitten accidentally by Rex and would finally find out what happened to her friend.

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