Brown Howler (Alouatta fusca)

The brown howler , also known as brown howler monkey, is a species of howler monkey, a type of New World monkey that lives in forests in southeastern Brazil and far northeastern Argentina . It lives in groups of two to 11 individuals. Despite the name "brown howler", it is notably variable in colour, with some individuals appearing largely reddish-orange or black.

The two subspecies are:
*Northern brown howler , listed as critically endangered
*Southern brown howler