'Mule' in the Bible

The servants of Absalom did to Amnon as Absalom had commanded. Then all the king's sons arose, and every man got up on his mule, and fled.

Absalom happened to meet the servants of David. Absalom was riding on his mule, and the mule went under the thick boughs of a great oak, and his head caught hold of the oak, and he was taken up between the sky and earth; and the mule that was under him went on.