The Ass and the Wolf
An ass, grazing in a field, saw a wolf come forward to seize him and immediately pretended to be lame. The wolf, coming up, inquired the cause of his lameness. The ass said that passing through a hedge he trod with his foot upon a sharp thorn, and requested the wolf to pull it out, lest when he supped on him it should injure his throat.
The wolf consented and lifted up the ass' foot, giving his whole mind to the discovery of the thorn. The ass, with his heels, kicked his teeth into his mouth and galloped away.
The wolf, being thus fearfully injured, said, "I am rightly served, for why did I attempt the art of healing, when my father only taught me the trade of a butcher?"