The Eurasian otter is one of our top predators, feeding mainly on fish, waterbirds, amphibians and crustaceans. Otters can be distinguished from Mink by their much larger size, more powerful body, paler grey-brown fur, broader snout and broader, pale chest and throat. The otter is well suited to a life on the water as they have webbed feet, dense fur to keep them warm and can close their ears and nose when underwater.