The Sri Lankan sambar deer is a large deer species native to the forests and grasslands of Sri Lanka. It has a robust body, long legs, and a thick coat that varies in color from reddish-brown to gray. Males are larger than females and possess antlers that can grow up to 90 centimeters long. These deer are primarily herbivorous, feeding on leaves, fruits, and grasses. They are known for their solitary or small group behavior, often found near water sources. The Sri Lankan sambar deer plays a crucial role in its ecosystem by helping to maintain plant diversity through grazing.