The sika deer (scientific name: Cervus nippon) is a medium-sized deer with a body length of 140-170 cm, a shoulder height of 85-100 cm, and an adult weight of 100-150 kg. The female deer is small, and the male deer has horns and is generally four-pronged. There is a dark brown back line in the center of the back. The tail is short, the back is black, and the belly is white. The summer hair is brownish-yellow, with bright white plum spots and white hip spots, so it is called "sika deer".