The moment Jenn's hand hit the head of her lab, Winnie, she felt a tingling down in her crotch. Hot, lewd lust began to radiate out from her nether-regions, and she found her hand slowly petting slower, and further back on the golden lab.
It wasn't long before Jenn was wiggling out of her skirt, and panties with one hand; the other was being used to rub her dog right at the base of her tail. Winnie let out a low, eager whine, and then went bounding off to the middle of the living room, tail hiked up for all to see.
Jenn's fingers were absently stroking her crotch, as her labia began to fuse together, and her clitoris started to elongate. She was making eager little whimpering sounds, as her feminine charms quickly started to look more, and more canine--and male canine, at that. As a sheath began to form, the shemale human girl began to pick up speed, and soon, she was upon Winnie, humping away at her backside.
All the while, her new cock, and balls were filling out, slowly swelling up, and becoming a rather real part of the poor teen's body, and while she was mentally trying to shake off the effects of the curse, her body was more than willing to make use of what was before it.