Scarcely had Jeff finished removing his clothing when he pitched forward to land on all fours. It's actually happening, he thought, in the last thought he would ever form using words. As his skull shrank and reshaped itself his--her--mind also reshaped itself, memory fading and language being replaced by sensual memories. A whole new world of scent revealed itself to her as color vanished from her field of vision, soon forgotten as if it had never been. Her sexuality was reorganizing itself from penetrating to receptive, than virtually vanishing from her consciousness, to reemerge in times of heat. The range of her hearing extended to higher pitches, as the sound she identified herself with changed from Jeff to Jessie.
Jessie wagged her tail as Sally petted her. For the first time in either of her lives she felt simple, uncomplicated, complete joy.
Sally scratched her pet's ears. "OK" she said "I know you can't understand this, but I feel I should it explain it anyway. This is permanent and reality-altering. There's a lot I miss about being a dog, but frankly being a bitch that's bisexual and horny all the time is pure hell. Nobody's interested unless you're in heat, and the other bitches aren't interested unless they're in heat, and even then they'll drop you as soon as a male shows up. But human females are in heat all the time! So anyway, I'm Sally, beloved if somewhat promiscuous daughter of the household, and you're our beloved family pet Jessie. You have normal bitch sexuality, so you don't have any of my problems. I've also set up a recurring pattern on the Chronivac to revert your age every year for a year eighty times, so even though you're a dog you'll have a human lifespan. I thought that was fair."
Jessie wagged her tail even harder. She was with her favorite human, and that was all she needed to be happy.