If you’ve ever walked the beach and pocketed a neat-looking rock, know that you share something in common with otters. The ...

That’s where their special pockets and their favorite rocks come in. Researchers have observed sea otters using their chosen rocks in two ways: either as an anvil, placing the rock on their ...

We're starting to realize how smart otters really are. They know how to play basketball. They know how to stack cups, They know how to use rocks to open clams. This type of tool use is ...