White-faced saki monkeys (Pithecia pithecia) are given that name because the males have a white ring around their faces, although the females do not.
Both males and females are a grizzled brown colour with slight white streaks on the side of the nose.
They are found in the rainforest of the Amazon Basin, and live in evergreen, coastal, secondary, and gallery forests.
White-faced saki monkeys spend most of the time in the trees, rarely going down to the ground, but they have occasionally been found on the ground or on new-growth trees.
Their wild diet is made up of fruit, seeds and flowers. It also occasionally includes animal prey, such as small birds and bats.
White-faced saki monkeys also have special canine teeth, which enable them to crack large nuts that other monkeys would leave alone.
When sakis need to drink, they will go to a hollow or hole in the tree where water has gathered and put their hands in, then lick the water droplets off their hand.
They also eat termite nests, which are high in iron!