 Oribi ( pronounced / <unk> / ) ( <unk> ourebi ) is a small antelope found in eastern , southern and western Africa . The sole member of its genus , the oribi was first described by the German zoologist <unk> August Wilhelm von Zimmermann in 1782 . Eight subspecies are identified . The oribi reaches nearly 50 – 67 centimetres ( 20 – 26 in ) at the shoulder and weighs 12 – 22 kilograms ( 26 – 49 lb ) . This antelope features a slightly raised back , and long neck and limbs . The glossy , yellowish to rufous brown coat contrasts with the white chin , throat , underparts and rump . Only males possess horns ; the thin , straight horns , 8 – 18 centimetres ( 3 @.@ 1 – 7 @.@ 1 in ) long , are smooth at the tips and ringed at the base . 
