Russian muskrat has a friendly and gentle personality and is a kind of rodent that is relatively easy to approach people. As long as it is not frightened, the Russian muskrat will basically not attack people. . The Russian muskrat is a small, precious furry beast. The Russian muskrat is like a big mouse, with a body length of 35-40 cm and a tail length of 23-25 cm. It is larger than the vole and weighs 0.8-1.2 kg.

Russian muskrat has dense fur, brownish-black or chestnut-yellow on the back and brownish-gray on the ventral surface. The tail is brown-black in length, slightly flattened on the side, with scaly flakes and sparse brown-black hairs. The lateral flattening of the tail is not obvious in the mice that have just left the nest and live independently. The Russian muskrat has a small head, slightly flattened, and a short, thick neck with no clear boundaries to the trunk.