Just as Jeff was starting to feel bad for her cat Nea now being left with no tail, fewer nipples than normal, and human ears that looked silly on the cat's head, Jeff could hear (enhanced by her new cat ears) the rutting whine of the feral neighborhood tom cat in the alley outside her house which gave Jeff a couple ideas as she realized she could tune the Chronivac to swap with the tom.
Jeff gave Nea the tom's extra cat nipples, ears, and tail. The difference in color patterns and size to Nea's old ears and tail seemed a bit funny to Jeff, but it was still better than leaving Nea with human ears and no tail. Jeff was thinking about how many of her neighbors had complained about all the kittens the tom had produced, given animal control kept failing to catch the tom, and so Jeff thought that she could make the neighborhood a bit better by swapping Nea's spayed pussy with the tom's un-neutered cock and balls. Jeff made a mental note to keep Nea inside the house at all times until she could get Nea neutered at the vet.
Despite or perhaps because of the change in equipment, Jeff was surprised that she could still hear the whine of the (former) tom and decided it was only fitting to take further advantage of that cat still trying to bother Nea by whining outside Jeff's house. Jeff swapped her eye's with the cats for the enhanced night vision, but was immediately pleased with the other extra visible details they gave her. She had the eyes of a predator now. (Admittedly, the neighborhood's most wanted sexual predator, but yet still quite a predator.) She fiddled with the Chronivac controls and percentages until she was able to take some of the cat's enhanced smelling abilities while keeping her nose looking mostly human. Similarly, she fiddled with it until she was able to get some of the cat's sharper teeth without making her mouth look too weirdly inhuman. Finally, and with the most amount of control fiddling and finesse, she managed to snag the idea of the cat's retractable claws while keeping her feet and hands mostly human looking.
Jeff found that she really enjoyed extending and then retracting her claws. She reached down a hand to her bedroom carpet and ran her claws through it, enjoying the sensation so much she wanted to do it with both hands and feet. As she lay down on the carpet it tickled all eight of her nipples and she moaned a bit with arousal. Her tail was sticking straight up (presenting her pussy to the world). She wasn't sure how long she dug into and out of the carpet, exercising her claws and enjoying the sensations of it, teasing her own nipples with moments of soft carpet contact.
When Jeff stood up from her scratching work she finally noticed what Nea had been up to in the meantime. Nea was very enthusiastically in the middle of what was definitely no longer a self-cleaning session, but he was deeply engaged in a self-blowjob. Jeff was surprised at how much of a pulse of arousal she felt on noticing this. Jeff hoped it was mostly still just her arousal from teasing herself from the carpet, but realized thoughts of trying to get a cat's athletic flexibility into a human torso somehow so that she could lick her own pussy were flitting through her head. Jeff tried to bury the other surprisingly arousing thoughts about how her cat now had the cutest cock, and especially about how wild and scintillating it smelled.