For a long time, scientists judged animal intelligence by how closely it resembled human behavior. That left a lot unnoticed.

As humans, we like to think we invented intelligence, relying on education and experience to reinforce our confidence in what we know. But, wander through jungles, oceans, and skies, and you'll see ...

Crows are among the most intelligent birds, capable of solving complex problems, using tools, and even planning ahead. Unlike ...

This unusual case revives a long standing scientific debate about tool use among animals. Some researchers adopt a broad definition, including any interaction with an object that helps achieve a goal.

Many years ago, some kind soul wove a pair of sandals for a horse. We will never know the identity of the weaver or the creature the sandals were woven for, but the shoes have endured for well over a ...