Red fox is a carnivora canidae fox mammals, also known as grass fox, red fox. The body size is slender; the snout is pointed, and the ears are large and pointed. The body color varies greatly due to different seasons and regions, from yellow to brown to dark red, and the larvae are light grayish brown. Common hair on the back is reddish brown, slightly yellowish on the shoulder and body. Black brown behind the ear, the hair color of the upper part of the back of the ear is significantly different from that of the head, which is black. The abdomen is white, and the legs are slender and black. The tail is thick and fluffy, and the tail tip is gray. Black stripes on the outside of the limbs extend to the foot surface. The body is covered with abundant hairs and long needle hairs; the paws are densely hairy; the base of the tail has subcaudal glands.

A genus of mammals in the order Carnivora and family Canidae. The body length is 45-90 centimeters, the tail length is 25-60 centimeters, the weight is 2-10 kilograms, and the largest one exceeds 15 kilograms. The female animal is slightly smaller in size than the male animal. There are 12 species of foxes in the world and 3 species in China, namely the red fox, sand fox, and Tibetan fox. They mostly inhabit the banks of forests, grasslands, hills, wastelands, valleys, lakes, and caves in semi desert areas. Foxes usually move alone and mainly live in pairs or families. Foxes have a high reproductive rate, strong disease resistance, diverse diet, and are easy to raise. Has high economic value. Widely distributed in Eurasia and North America.