Learn more about these big-nosed monkeys. Find out why scientists think these primates have such outsized organs.

On Jan. 6, residents of Samut Sakhon province, central Thailand, found an injured monkey near a railway track. Pot-bellied ...

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 ...