 The oribi is a small , slender antelope ; it reaches nearly 50 – 67 centimetres ( 20 – 26 in ) at the shoulder and weighs 12 – 22 kilograms ( 26 – 49 lb ) . The head @-@ and @-@ body length is typically between 92 and 110 centimetres ( 36 and 43 in ) . Sexually dimorphic , males are slightly smaller than females ( except for O. o. ourebi , in which females are smaller ) . 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 . The bushy tail , brown to black on the outside , has white insides ( except in O. o. hastata , that has a completely black tail ) . The subspecies show some variation in colouration ; O. o. ourebi is a rich rufous , while O. o. hastata is yellower . 
 The oribi is a small , slender antelope ; it <a href='uninflect' title='1'><mark>reaches</mark></a> nearly 50 – 67 centimetres ( 20 – 26 in ) at the shoulder and <a href='uninflect' title='2'><mark>weighs</mark></a> 12 – 22 kilograms ( 26 – 49 lb ) . The head @-@ and @-@ body length <a href='drop_aux' title='3'><mark>is</mark></a>typically between 92 and 110 centimetres ( 36 and 43 in ) . Sexually dimorphic , males <a href='drop_aux' title='4'><mark>are</mark></a>slightly smaller than females ( except for O. o. ourebi , in which females <a href='drop_aux' title='5'><mark>are</mark></a>smaller ) . This antelope <a href='uninflect' title='6'><mark>features</mark></a> a slightly raised back , and long neck and limbs . The glossy , yellowish to rufous brown coat <a href='uninflect' title='7'><mark>contrasts</mark></a> with the white chin , throat , underparts and rump . The bushy tail , brown to black on the outside , <a href='got' title='8'><mark>has</mark></a> white insides ( except in O. o. hastata , <a href='null_relcl' title='9'><mark>that</mark></a><a href='got' title='10'><mark>has</mark></a> a completely black tail ) . The subspecies show some variation in colouration ; O. o. ourebi is a rich rufous , while O. o. hastata <a href='drop_aux' title='11'><mark>is</mark></a>yellower . 
Da oribi is a small , slender antelope ; it reach nearly 50 – 67 centimetres ( 20 – 26 in ) at the shoulder and weigh 12 – 22 kilograms ( 26 – 49 lb ) . The head @-@ and @-@ body length typically between 92 and 110 centimetres ( 36 and 43 in ) . Sexually dimorphic , males slightly smaller den females ( except for O. o. ourebi , in which females smaller ) . This antelope feature a slightly raised bacc , and long neck and limbs . The glossy , yellowish to rufous brown coat contrast with the white chin , throat , underparts and rump . Tdabushy tail , brown to black on thdautside , got white insides ( except in O. o. hastata , got a completely black tail ) . The subspecies show sum variation in colouration ; O. o. ourebi is a rich rufous , while O. o. hastata yellower .