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 ...

Bruce the kea is missing his upper beak, giving the olive green parrot a look of perpetual surprise. But scientists are the astonished ones. The typical kea (Nestor notabilis) sports a long, sharp ...

You may be familiar with the debate. Some biologists, anthropologists, and psychologists claim that several nonhuman animal species have culture. They point to two kinds of evidence to support their ...