Adult male Black Buck have black and white fur. Upper part of the body is black, while the under part and a ring around the eyes is white in colour. Even the fawns have these markings. The males are born lighter in colour, but turns darker at maturity. The females are usually hornless. Males have 24 inches long horns, which are twisted in tight spiral. They are about five feet long and weigh about 85 pounds. Males are dark brown in colour, while the young ones and females are light brown.