Besides being dark and mysterious, crows are extremely intelligent birds. So smart, in fact, that it might be a little bit scary. Even though their brains are the size of a human thumb, their ...

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

A study of New Caledonian crows, which use sticks to fish beetle larvae out of tree trunks, shows exactly how advantageous tool use can be for animals. "Evolutionarily, animals that use tools have an ...

When Jane Goodall first encountered chimpanzees using twigs as tools in 1960—something that scientists had assumed only humans could do — she wrote an excited telegram to her colleague Louis Leakey: ...

Some years ago, a bird researcher visited a famous institute that deals with primate cognition to give a talk. When the director of the institute introduced the bird researcher and his talk, he used ...