Still observing the Chronivac in one hand, while petting his newly obtained pet dog with the other one, Bobby thought about the multiple possibilities offered by the device.
As he made the Shiba roll on his back for more snuggles, he had schemed a clever idea : why not use his dog for breeding purposes ?
If he managed to find a female dog of the same race, and allowed sexual intercourse betwween her and his dog, she could provide him valuable puppies, and-
Another idea, wicked and bold this time, passed on his brain, as he watched his canine pet.
Why need a female dog, when he could provide one right here ?
Scrolling through the options, he had successfully found what he was looking for : a slider capable of changing an being's gender.
For a moment, he wondered about himself, but brushed off this abrupt thought. He had better things to do right now.
Pressing on the slider's confirmation screen, Bobby watched in sheer satisfaction as Nathan's doggy body rattled with internal discomfort.
The Shiba Inu, disturbed, stared blankly at his crotch, as his red-knotted penis slowly shrinked and deflated. Trying to instinctively lick it was no use, and frustrated the dog to comical lengths.
But more than frustration, it was confusion that fueled him. Or... rather her, as her shriveled junk and furry testicles disappeared and dug into a mostly prominent vagina, taking it's place and enlarging her hips to allow puppy-bearing. After all, that was the whole point of this drastic modification.
It wasn't long before more subtle changes occured. As her size decreased slightly to adjust to her newly modified gender, her whole body became much more effeminate, to allow a quint distinction with her male counterparts, and the appearance of doggish teats perking out of her furry belly finally concluded her new transformation.
With that, the female dog that used to be Nathan glanced at her master, expressing herself in a much higher-pitched tone.
" Well, " did say Bobby after witnessing the whole process, " looks like you're ready for some fun time with a stud, right ? "
Nathan blissfully barked. Not much of an answer here, but Bobby did not mind, as he scratched his head in intensive reflexion.
" Well then, I'll need to give you a proper name. For official documents and the like... "
He pondered a goodly long moment.
" How about I call you... Nadya ? "
The Female Shiba jumped at her master, welcoming positively this proposition by licking her master's face.
" So be it ! From now on, you shall be known as my dog Nadya ! " gleefully replied the owner of a very good-looking future bitch, as Nadya kept on giving affection to Bobby, being very happy of her new name and status.