Found in rainforests of central S. America, ranging through eastern Bolivia, souther Brazil, Paraguay, and northern Argentina

Eat mostly leaves, but compliment their diet with fruits, buds and flowers.

Get their water needs met by their food

Wet hands using dew on leaves and then lick their hands

Long, strong prehensile trails

Tails are hairless on the underside, allowing them to be sensitive to touch and act in identifying things

Sexually Dimorphic - males are black, females are lighter brown or tan

They howl to communicate their location, allowing them to space out so they don't have to complete with eachother for food.