In South American rainforests, researchers can tell one saddle-back tamarin from another, but what's more difficult, is to see what the squirrel-sized monkeys are putting in their mouths. Researchers ...

A woman was enjoying the petting zoo at the Brockton Fair Wednesday night when a capuchin monkey named Sammy bit her finger. Sue Rodrigues, the operations coordinator for the fair, said the woman was ...

Alejandro Zúñiga / The Tico Times. To many first-time visitors to Costa Rica’s varied forests, mantled howler monkeys are the first indication that they are somewhere wild. Often heard before they’re ...

JOSé MANUEL PANDO, Bolivia, April 28 (UPI) --Biologists do their best to observe the behaviors of South America's saddleback tamarin, both from the vantage of the rainforest floor and by ascending ...

A male monkey in Japan has been filmed trying to mate with a female deer—likely the first observation of two distantly related species having a nonviolent sexual encounter. Japanese macaques and sika ...