The sika deer is a medium-sized deer native to East Asia, particularly found in countries like Japan, China, and Korea. They are known for their distinctive spotted coat, which varies in color from reddish-brown in summer to grayish-brown in winter. Sika deer are social animals, often seen in small groups, and are known for their vocalizations, which include a range of barks and whistles. These deer are adaptable and can thrive in various habitats, including forests, grasslands, and wetlands. Sika deer primarily feed on grasses, leaves, and shrubs. They are also known for their impressive antlers, which are shed and regrown annually by males.