howler monkey
US /ˈhaʊ.lər ˌmʌŋ.ki/
UK /ˈhaʊ.lər ˌmʌŋ.ki/

1.
a large, arboreal monkey of Central and South America, noted for its loud howling cries
:
•
The sound of a howler monkey echoed through the rainforest.
•
We spotted a family of howler monkeys high in the trees.