A large South American monkey with a distinctive roaring call, also known as the howler monkey or red howler.
From Tupi 'araguato' (howler), named by indigenous peoples for the animal's most distinctive feature. Early naturalists adopted indigenous names for unfamiliar New World species.
Howler monkeys have the loudest call of any land animal—their roars can be heard up to 3 miles away in the rainforest! Their enlarged vocal chamber is basically built-in megaphone anatomy, and you can hear them echo off mountains.
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