Slow loris monkeys have poisonous elbows
The doe-eyed slow loris is a popular exotic pet, but these little fur balls are one of the only poisonous mammals in the world. Normally no more than 15 inches long, slow lorises produce a toxic secretion from the brachial gland in the upper arm that can cause a severe allergic reaction in other mammals. When threatened, the creatures lick the secretion and bite the predator, delivering the poison into the wound.