These are the alarm calls of the black-fronted titi (Callicebus nigrifrons), a monkey with a rusty-brown tail that lives in small family units. The cries are loaded with information. Cristiane ...

Titi monkeys are an endangered species that come from Colombia, Brazil, Peru and north Paraguay. They have long, soft fur in red, brown, gray and black.

With this discovery, there are now a total of 34 known species of titi, reaffirming its claim as the largest group of South American monkeys ... and the face is all black." The distinctive ...