Yucatán black howler monkey

The Yucat\u00e1n black howler monkey (Alouatta pigra) is an endangered species native to Guatemala, Belize, and southern Mexico. These monkeys are the largest New World monkeys, known for their roaring cries, which are amplified by an enlarged hyoid bone in their throat. They are stoutly built with prehensile tails and typically have black, brown, or red fur. Howler monkeys live in groups and mark their territories with howling, which can be heard for miles. They primarily feed on leaves and are slow-moving, rarely descending to the ground. Conservation efforts focus on habitat protection due to difficulties in maintaining them in captivity.12