From tool-using chimpanzees to puzzle-solving capuchins, the primate world is packed with surprising brainpower. But how do the planet’s cleverest monkeys and apes really compare with human intelligen ...

Humans not only recognize emotions on the faces of monkeys and apes but also unconsciously mimic those expressions.

COLUMBUS, Ohio – Have you ever wondered what kind of video content would most grab the attention of monkeys? A new study of long-tailed macaques suggests the monkeys seem to like some of the same kind ...