Intelligence isn't unique to humans — as the 15 amazing videos of animals solving problems in this article are about to show you.

Animals have always shared our planet, our homes, and sometimes even our emotions. While humans often see themselves as more intelligent beings, animals possess qualities that remind us of what truly ...

Two chimpanzees meeting with each other apparently have a discussion using hand gestures, one of the human-like characteristics of other mammals. (Getty Images) Of the 8.7 million species on Earth, ...