Scientists have reported that a rare monkey species — once known to exist in two regions — is now only found in Vietnam's Khau Ca protected reserve. Tonkin snub-nosed monkeys are native to Vietnam.

A colony of African vervets in Dania Beach raises big questions about how humans can and should manage nonnative species.

The 43 rhesus macaque monkeys that escaped a South Carolina medical lab this week are among the most studied animals on the planet. And for more than a century, they have held a mirror to humanity, ...

Some Central Florida residents got a surprise holiday guest ahead of Christmas. Monkeys have been sighted roaming around Orange City this week, with law enforcement officers stressing that the public ...

A new study shows macaque species with more tolerant social systems have larger brain regions linked to emotions and social signals.