Bryan moves around behind Katy, and rears up on his hind legs. Falling down on her back, he growls at the transforming girl to tell her not to struggle as he plunges his cock into her pussy, she lets out a yelp as he thrusts harder and faster into her.
The sex is speeding up the process of her transformation, with each thrust her humanity slips away as his knot slides into place. Within a matter of seconds, she is fully a dog.
So, what's happening outside?