The Sambar Deer (Rusa unicolor) is a large deer native to the Indian subcontinent, South China, and Southeast Asia.
Sambar Deer are nocturnal. The males live alone for much of the year, and the females live in small herds of up to 16 individuals. They often congregate near water and are good swimmers. Like most deer, they are generally quiet, although all adults can scream or make short, high-pitched sounds when alarmed. However, they more commonly communicate by scent marking and foot stamping.
They feed on a wide variety of vegetation, including grasses, foliage, browse, fruit, and water plants, depending on the local habitat.