Species of antelope (Kobus ellipsiprymnus) that lives in herds, usually near water, on plains and floodplains and in woodlands and swamps of sub-Saharan Africa. Waterbucks are almost 5 ft (1.5 m) high at the shoulder. Males have long, heavily ridged horns that curve backward and then upward. The coarse, shaggy coat is grayish, and the rump has a white ring