Fossil jaw remains found in Egypt suggest that the earliest modern apes evolved in North Africa, not in East Africa where ...

A recent study has shown how some species of monkeys have complex social hierarchies and how some are prone to taking risks ...

Punch, the abandoned baby monkey, went viral thanks to his beloved stuffed orangutan toy. However, he may soon outgrow it, ...

Howler monkeys are dropping dead from trees in southeast Mexico's tropical forests, and authorities said Monday they were investigating whether extreme heat was killing the endangered animals.

It is not unusual for laboratory monkeys to engage in abnormal repetitive behaviors (ARBs), such as pacing and hair-plucking.