There are five subspecies of Asian wild ass at present; the Syrian wild ass Equus hemionus hemippus became extinct in 1927 (3). Asian wild asses have fairly short legs (2), and their colouration varies depending of the season (3). They are generally reddish-brown during summer, but become a yellowish brown in winter. The underside is either white or buff. They have a characteristic black stripe, bordered with white that extends along the middle of the back (2).