Why are capuchin monkeys kidnapping howler monkey babies in Panama? We investigate this bizarre case of primate abduction ...

A capybara and a howler monkey have formed an adorable friendship while sharing a habitat at the Denver Zoo. Baya and Rebecca ...

A capybara and a howler monkey at the Denver Zoo have defied animal norms to become best friends and snuggle buddies.

Howler infant number 5 on the back of a juvenile capuchin carrier, who is using stone tools at an anvil site in a stream bed. Usually, this behavior in females is described as adoption, thought to be ...

Here a white-faced capuchin monkey perches on a tree branch in Manuel Antonio National Park in Costa Rica. A group from the same genus has been observed with stolen howler monkey babies on a small ...

MEXICO CITY (AP) — It’s so hot in Mexico that howler monkeys are falling dead from the trees. At least 138 of the midsize primates, who are known for their roaring vocal calls, were found dead in the ...