Howler monkeys are omnivores, or animals that eat plants and meat. Howler monkeys often last 15 to 20 years in the wild and weighs about 15 to 22 lbs. Howler monkeys are mammals that live in tropical regions of Central and South America. When a howler monkey screams at dawn or dusk, the din can be heard from 3 miles (5 kilometers) away. These extremely loud monkeys are the biggest of all New World monkeys. The howler monkey uses its tail as an extra arm to swing or even hang on a tree. These primates hardely ever touch the ground. The howler monkeys main diet is usally leaves.
Howler monkeys have beards and long, thick hair which may be black, brown, or red. The red howler species is the most common, but it is often targeted by hunters eager for bushmeat. Other species of howler monkey may be critically endangered over sections of their ranges.