'Wild ass' in the Bible

“He (Ishmael) will be a wild donkey of a man;His hand will be against every man [continually fighting]And every man’s hand against him;And he will dwell in defiance of all his brothers.”

“Does the wild donkey bray when he has grass?Or does the ox low over his fodder?

For they have gone up to Assyria,Like a wild donkey wandering alone and taking her own way;Ephraim has hired lovers (pagan allies).