 Sorraia are generally dun or a dun variation called <unk> . Dun coloring includes primitive markings such as a black dorsal stripe , black tipped ears , horizontal <unk> on the legs and a dark muzzle area . The dark muzzle area is in contrast to some other dun @-@ colored horse breeds , who have light @-@ colored muzzle areas and <unk> , possibly due to the presence of <unk> genetics . Sorraia horses have bi @-@ colored <unk> and tails with lighter colored hairs that fringe the outside of the longer growing black hair . This is a characteristic shared with other predominantly dun @-@ colored breeds , such as the <unk> horse . <unk> Sorraia occasionally have white markings , although they are rare and <unk> by the breed 's studbook . 
