Otter can't sleep without hugging a kitten

I’ve been wondering for a while, why is it that we’re always told that keeping a wild animal as a pet is inhumane, dangerous, irresponsible and usually illegal, yet the internet is chock-fucking-full of videos of household raccoons, panthers, otters, sloths, skunks, owls, foxes, squirrels, elephants, giant squid, etc. etc., almost all of whom look adorable and happy and healthy as can be?
I’m not even trying to imply that we’ve been lied to, because wild animals as pets being a bad idea makes intuitive sense to me, but things simply aren’t adding up here.