Sea otters are known for using tools, but not all of them do. A new study finds those that use tools have better survival odds in a world where their traditional food sources are changing.

Among the diverse and fascinating behaviors in the animal kingdom, tool use has long been considered a hallmark of advanced cognition. While we often associate tool usage with primates like ...

Q. You once said diamondback terrapins were your favorite turtle. What is your favorite mammal? A. Tough question, because all puppies and kittens, indeed most baby mammals, are engaging. But sea ...

Sea otters are large marine mammals that spend their days foraging in kelp forests. They dive to the bottom to grab tasty morsels, plus sometimes rocks that they plan to use as tools.

Some otters rely on tools to bust open hard-shelled prey items like snails, and a new study suggests this tool use is helping them to survive as their favorite, easier-to-eat foods disappear.

Some otters rely on tools to bust open hard-shelled prey items like snails, ... Some otters rely on tools to bust open hard-shelled prey items like snails, and a new study suggests this tool use is ...