There’s was a time when high school students dissected cats in biology class.
All the millions of stray cats and kittens that are euthanized may as well be put to good use for something. I had a patient once who had two or three cats, which, of course, had one litter after another. Most of them sort of disappeared, but they kept a few of them around to start the cycle all over again. I informed her that there was a free spay and neuter program in town. “Oh, no, I wouldn’t want to do that. I love my little kitties”, was her reply.