Kandula, an 7-year-old elephant that the Smithsonian's National Zoo, has remarkable problem- solving skills. He can use boxes and stepping stools to reach food that was previously out of reach.

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 ...

Opening doors may not seem that hard, but when you have a trunk instead of hands, things can get complicated. Researchers tested the problem-solving skills of wild elephants for the first time by ...