The global search for the most intelligent animals has become one of science’s most captivating pursuits. From jungles to oceans to treetops, researchers are continually discovering surprising new ...

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 ...

If you’re planning a whimsical animal burglary, you’ll definitely want a raccoon anchoring your squad. In a bizarre 1908 study by ethologist H.B. David, raccoons were able to pick complex locks in ...