Credit: flickr Sea otters are one of the few non-human species known to use tools. They often carry small rocks to crack open hard shells like clams, crabs, or mussels. This behavior demonstrates ...

If you’ve ever walked the beach and pocketed a neat-looking rock, know that you share something in common with otters. The only difference is that an otter might carry its favorite rock forever, ...

Sea otters are often portrayed as lovable and relaxed animals that spend their time goofing around. Or, simply floating on their backs in the water with their special rock. While this image is ...