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 ...

Adorable footage posted on January 28 captures scenes from a special snack-related soiree enjoyed by several of Oregon Zoo’s ...

Sea otters are one of nature’s most fascinating creatures, beloved for their playful personalities and critical role in marine ecosystems. From their dense fur to their impressive tool use, these ...

Austrian researchers say they've found the first known example of tool use by cattle, courtesy of a Swiss-Brown cow named Veronika.