 Like other jackrabbits , the black @-@ tailed jackrabbit has distinctive long ears , and the long , powerful rear legs characteristic of hares . Reaching a length about 2 ft ( 61 cm ) , and a weight from 3 to 6 lb ( 1 @.@ 4 to 2 @.@ 7 kg ) , the black @-@ tailed jackrabbit is the third @-@ largest North American hare , after the antelope jackrabbit and the white @-@ tailed jackrabbit . The black @-@ tailed jackrabbit 's dorsal fur is <unk> ( dark buff <unk> with black ) , and its <unk> and the <unk> of its legs are creamy white . The ears are black @-@ tipped on the outer surfaces , and <unk> inside . The ventral surface of the tail is grey to white , and the black dorsal surface of the tail continues up the spine for a few inches to form a short , black stripe . The females are larger than males , with no other significant differences . 
