Rhesus macaques in U.S. research laboratories frequently pull out their own hair, pace in tight loops, and rock back and forth, behaviors long attributed to the stress of captivity. A study published ...

Add Yahoo as a preferred source to see more of our stories on Google. A new study has found that chimpanzees may be far from shy bathroomgoers. A team of researchers spent more than 600 hours studying ...

This is an updated version of a story first published on Nov. 5, 2023. The original video can be viewed here. With extreme weather events on the rise across the globe, we were interested in a study ...

Somewhere along Colombia’s Magdalena River, the country’s longest waterway, night monkeys on one bank may be drifting apart ...

One night, 10-year-old Sebastián Montilla heard a creature moving over a tree branch on his father’s farm in Pijao, Quindío department, one of Colombia’s renowned coffee-growing regions. As he pointed ...

Proboscis monkeys, endemic to Borneo, are threatened by habitat destruction, forest fires and hunting. But until two decades ago, trade wasn’t a threat to the CITES-listed species, which is ...