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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Here a white-faced capuchin monkey perches on a tree branch in Manuel Antonio National Park in Costa Rica. A group from the same ...

The “big truck, small man” phenomenon is also seen in the animal kingdom. The loudest howler monkeys were found to have the smallest packages. Hyoid bone size, which is responsible for vocalizations, ...

The number of heat-related howler monkeys deaths in Mexico has risen to 157, the government said, with a tragically small number of the primates treated or recovering. A heat dome — an area of strong ...

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 ...

A landmark decision may stop monkeys being electrocuted on power lines. Costa Rica’s constitutional court has ordered urgent ...

If evolution had a sense of humor – its favorite punchline might be the howler monkeys. These tree-top vocalists are nature’s rock stars: dramatic, loud and convinced that volume equals value. They ...

Zoos often group the two species because of their similar habitats and dispositions Erik Bowker/Denver Zoo Conservation Alliance A capybara and a howler monkey have struck up an adorable friendship ...