desman
One of two insectivorous semi-aquatic water mammals related to moles. Approximately the size of a rat, but somewhat heavier. Has a long probiscis-like snout, webbed hind feet, and a long flat tail for swimming. Desmans are mainly found along the banks of streams or ponds, and eat aquatic insects.
Desmana moschata, of southeastern Russia; Galemys pyrenaica, of the Pyrenees.