With more than 260 species of monkeys there is going to be some variation ... Emperor tamarins are blackish-brown and have a ...

Howler monkeys have beards and long, thick hair which may be black, brown, or red. The red howler species is the most common, but it is often targeted by hunters eager for bushmeat. Other species ...

More recent genetic studies suggest there are only two species—the Peruvian yellow-tailed and the common (or brown) woolly monkey. The gray, Columbian, and silvery woolly monkeys were ...