The Indian wild ass (Equus hemionus khur) also called as the ghudkhur in the local Gujarati dialect, is a subspecies of the onager native to Southern Asia. The Indian wild ass's range once extended from western India, southern Pakistan (i.e., provinces of Sindh and Baluchistan), Afghanistan, and south-eastern Iran. Today, its last refuge lies in the Indian wild ass Sanctuary, little rann of Kutch and its surrounding areas of the great Rann of Kutch in the Gujarat province of India.
So, the correct answer is 'Wild ass'.