Yeah, fair enough. But there were still a bunch of humans on that dirt-farming planet, right? I guess maybe they weren’t allowed to have cats, for some reason. But I dunno. I know what would happen in the United States right now, if someone tried to ban cats. It would get real ugly, real fast, for whoever tried to pull that shit.
So I still say, if Worf hung out with humans for any chunk of time, he should have seen cats. Or at least, like, a shitload of vintage cat memes and videos. Those would still be going around on all the Earth communications networks, for sure. It’s a huge part of human culture.