It’s no secret that monkeys are some of the most intelligent animals on the planet. For centuries, scientists have used them ...

Howlers are New World monkeys found in tropical Central and South America. They are aptly named for their cacophonous cries. When a number of howlers let loose their lungs in concert, often at ...

As few as 6,000 of the endangered monkeys remain—with between 4,000 and 5,000 in Morocco. Photographer Francisco Mingorance spent more than a year taking pictures ofMacaca sylvanus high in the ...