Jeff stroking her belly, which was pregnant with a litter of fox cubs, decided that it wouldn't be fair to both of her weird ex-canine "boyfriends" if they weren't both also co-baby daddies of her litters. She really wanted another litter growing inside her, more mouths to feed with her ten very engorged teats, and she wanted to make it the fun way with "Bex" the hot cheerleader in her room with the erect dog cock tenting his skirt as the only outward reminder that "Bex" used to be her family's dog. (She was already pregnant with a litter from "Chloe" the formerly wild fox she had tracked down, with a fox cock pitching a tent in his hot cheerleader uniform.)
Jeff switched out of the Chronivac's swap mode and started with the first thing first: she unneutered poor "Bex". Jeff was surprised and turned on as Bex's balls reasserted themselves with a vengeance. They were huge dog balls that drooped far below where the hem of his miniskirt skirt would fall, even if it wasn't tented out of place by his erection.
Then Jeff set about modifying her own genitals. She moved her vixen pussy higher and more obviously front facing, and slid her asshole further back and away. In between and much more rear facing, Jeff added a clone of a wolf's pussy (and uterus) between her legs and cheeks. (She hoped some wolf genes might keep both of her litters able to play together for longer, and at least somewhat on equally wild footing.)
Jeff gestured to "Chloe" to fill her front vixen pussy and for "Bex" to take her (appropriately) doggy style in her new wolf snatch. She couldn't wait to feel Bex's breasts against her back and seed filling her new second womb.