RACCOON-DOG ( Nyctereutes procyonoides ), a small wild dog, with sharp-pointed muzzle, short rounded ears, bushy tail and long fur, found in China, Japan and Amurland. The total length is about 32 in., of which the tail measures 4 in. The prevailing hues are black and dusky yellow, the distribution of which varies in different individuals. In habit these dogs are chiefly nocturnal; and they are said to hibernate. In winter they feed on fish, and in summer on mice, forming small packs to hunt their prey.