I'm sure this has been posted about before, but animals seem to climb with a noticeable gap between their bodies and the thing they're climbing on; I don't have a picture but the Capuchins, for example, will climb up and down while flying through the air, or just float a bit above the pole they're on. I've heard this question reported with the Clouded Leopard, though I assumed for a while this was an issue of my computer lacking proccessing power (I've since upgrade my PC from my previous brick, and the problems remain, but I'd still consider this as a factor). I hate to say it, but I honestly don't like building for climbing animals (especially quick-moving ones like lemurs, monkeys, and big cats) at all, given the totally immersion-breaking climbing. I MEAN NO DISRESPECT TO THE DEVS; the system obviously took lots of time and effort, and for some animals mostly works as intended. But I wish it was a bit more true-to-life, though I know that's a tall task for anyone, and I hesitate to make more demands of the lovely dev team.