Otters are well loved for a variety of reasons, including their adorable personalities and affinity for holding hands. But ...

Conversely, river otters are semi-aquatic and mostly live on land, using water for food and transportation. Size is another factor that helps distinguish the saltwater mammal from its freshwater ...

Some otters use tools occasionally, while others use them most of the time that they're foraging for food. "We were interested in this tool use variation," says Law, so he and some colleagues ...

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.

The otters, however, were not very subtle in their escape. They left fresh tracks in the snow, galavanting around the zoo and beyond in full view of cameras. The pair never went very far, which is ...

A family of giant river otters was released into the Iberá National Park in northeast Argentina on July 1. The endangered species, with no known breeding populations in Argentina over the past 40 ...