There are 9 different species of howler monkey, found dispersed throughout the tropical jungles of South America. The howler monkey is one of the largest species of monkey found in South America with some howler monkeys growing to nearly a meter long.
Despite their large size, howler monkeys weigh less than 10 kg which allows them to move with more agility through the high trees and lets the howler monkeys hang from branches by their tails when picking fruit.