We support well-run zoos and sanctuaries for one compelling reason; for many species, they are their best and last chance at maintaining a viable, diversified population. You can quibble all you like about born-free ideals and the evils of captivity, but there's not enough time left for those sorts of scruples. There just isn't.
top to bottom: Chameleon, Flying Fox, Python, Beaver, Toucan.