The Eurasian River Otter is the most widely distributed species of otter in the world. It is brown on the back, shading to beige on the belly and throat, and is about one meter in length. The paws are webbed and the claws are well-developed.

With rather poor eyesight, it uses its strong whiskers as an aid in locating prey, which consists of mostly fish, but also crayfish, frogs and even water birds.