But cleverness is hard to define - animals have to contend with different challenges in life and what might be clever or ...

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

We now know that a wide variety of animals use tools, and some clever surprises are among them. 1 Examples involving invertebrates, reptiles, fish, birds, and mammals show different levels of ...

How big they are: From 5 to 32 feet (1.5 to 10 meters) long, depending on the species Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica ...

New Caledonian crows may find tool use fun, according to a new study. This is an Inside Science story. (Inside Science) -- Getting food is nice. But scoring that food through clever tool use is even ...

While researchers are divided on the conclusion, the behavior shows wolves may be smarter than we thought. This still image of a wolf at night comes from a camera trap, which was part of an experiment ...