Sure, they look like cuddly little monkeys, but you do not want to mess with these tree dwellers. slow lorises are primates, and like many apes they spend most of their lives climbing in trees. Unlike other apes (and very rare for mammals in general), slow lorises actually produce poison and can have very dangerous bites. They actually make their poison in glands that are located on their elbows, lick their elbows and mix the poison with their saliva to make for a dangerous bite. Their cuteness and danger factor actually have made these animals a hit in the illegal pet trade, if you can believe it.