When cats are involved, you're allowed to do all the crazily immoral bioethical stuff that people write SF novels about

Preparing For The Death Of A Beloved Cat, NYTimes.com Blog 3/23/11

An ultrasound showed that one of Toshi’s kidneys had atrophied and was essentially deceased. The other was enlarged, taking on the work of its dearly departed twin, and, as such, was incredibly stressed. Eventually, the vet said, it would fail. Within the year, probably. He seemed unmoved…