Somewhere between human and dog as they both transformed slowly he wrenched Katy's stubby tail out of the way and stick his human length doggie cock into her hairy slit. She howled and moaned in pleasure as she was being turned into a bitch again. Cal bent over and began patting his sister and scratching her behind her ears as he collapsed onto her as a heavy set German Shepard.
He came inside her, as his seed flushed into his sister's vagina he felt the curse start to leave him as like a drug wearing off. Both he and his sister turned into their human selves. It seemed that impregnation had released them from their curse. Meanwhile Sarah had to deal with being caught in the wild.