Deep in the forests of Mexico’s Yucatan Peninsula, a story of animal intelligence and social cooperation has unfolded over ...

Observations of Coiba’s tool-using immature capuchin monkeys show them carrying abducted infant howler monkeys. What is the reason for this behavior? Vanessa Crooks Caught in the act! Capuchin monkeys ...

During a routine survey at a nature reserve in the Democratic Republic of the Congo, a wildlife patrol team heard some noises coming from the trees. They started filming and ended up recording the ...

A kayaker says her peaceful ride through Silver Springs State Park was interrupted last week when a group of rhesus macaques began leaping from the surrounding trees into the water around her. Dave ...

A group of monkeys of unknown origin is roaming around St. Louis, according to officials. “The Department of Health has confirmed that multiple monkeys are on the loose around the vicinity of ...

Discover the key differences between Old World and New World monkeys, from nose shape to tails. Learn how to tell them apart and where they live.