During each session, a macaque sat in a chair and looked at a screen that showed a sequence of varied, real-world photos. The animal looked at each photo for an average of two seconds—about five ...

A chonky long-tailed macaque stealthily took two bananas from a child's backpack in a stroller at the Singapore Zoo. The ...

Photographer Francisco Mingorance spent more than a year taking pictures ofMacaca sylvanus high in the Middle Atlas mountains, home to one of the largest Barbary macaque populations.