A 7-year-old Asian elephant named Kandula at the Smithsonian National Zoo wowed his keepers when he devised a strategy to use a large plastic cube to obtain out-of-reach food. And when the cube wasn't ...

The elephant has the largest brain of any land mammal. Its ‘grey matter’ — crucial to thinking and problem-solving — is also more extensive. Impressive mental feats, therefore, might be expected of ...