A finger monkey is a monkey the size of a human finger. They got their name because of their size and the fact that they cling to your fingers when you try to hold them. The planet’s smallest living primate, finger monkeys are also known as pocket monkeys or tiny lions.
Indigenous to the rain forests of Brazil, Peru, Ecuador, and Columbia the common finger monkey can grow up to 14 inches. Don’t let a finger monkey’s looks fool you. Its claws are extremely sharp, and when provoked, these pygmy marmosets can wreak havoc like you’ve never seen.