Originally posted by Racer X 69 The OP didn't get specific. Only titled the thread Thematic Wildlife.
That said, there have been a few posts here of zoo specimens.
FYI: From me at least, many,many images from zoos and aquariums. The mammalian wildlife available to me are grey squirrels (easy) and whitetail deer (maybe spotted once a month). There are other species - bear, coyote, racoon, opossum, fisher, mink, otter, fox - over 30 years I've spotted coyote twice, once when I had a camera but they were half a mile away running across the ice on a reservoir (they do show as specs with just enough detail to identify), once in 30 years I was able to photograph a fox, twice a black bear. So whenever I can I visit a zoo, even when we're traveling somewhere such as Germany.