WASHINGTON -- Yet another animal has picked up a tool and put it to use. Once thought a unique primate trait, toolmaking and tool use have been seen in a variety of animals in recent years. Now add to ...

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 ...

When it comes to the smartest bird, we humans still have a lot to learn. Bird intelligence comes in many forms, and scientists are finding that many species exhibit intelligence similar to that of ...