'Mule' in the Bible

So Absalom's servants did to Amnon just as Absalom commanded, and all the sons of the king got up, and each mounted his mule and fled.

Absalom was found in the presence of the servants of David [as he was] riding on the mule. The mule went under the thicket of the great oak tree, and his head [was] caught in the tree. He [was] left hanging between heaven and earth, and the mule which [was] under him went on.