Peruvian yellow-tailed woolly monkeys are one of the rarest neotropical primate species, found only in the Peruvian Andes. They have thick and long fur which helps them adapt to their cold montane environment. Their yellowish tails are only present in adults and allow them to hang and swing from trees. These monkeys have the ability to leap 15m. They are threatened by habitat destruction and illegal hunting. They have low reproductive rates, producing offspring once every three years which adds to their vulnerability for extinction.