The sea otter in this amazing video clip is making the cutest trade! In the video, the sea otter offers a fisherman a pebble ...

CNN — When sea otters hammer mussel shells against rocks to help open them, they're leaving behind their own archaeological record that can't be compared to any other creature, according to a new ...

Otters are well known for their playful, energetic, and inquisitive behavior. However, did you know that otter play has a purpose other than just having fun? Or that otters are some of the most ...

Sea otters are highly intelligent marine creatures. Their intelligence is shown by their inquisitiveness and their use of tools. They use small rocks and pebbles to smash open crustaceans such as sea ...