the Domestic Donkey was Used for Riding
Source: TTT
Genesis 22:3
So Abraham got up early the next morning, saddled his donkey, and took along two of his servants and his son Isaac. He split the wood for a burnt offering and set out for the place God had designated.
Numbers 22:21
So in the morning Balaam got up, saddled his donkey, and went with the princes of Moab.