an ass feeding in a ing up, inquired the cause of his lameness. the ass replied that passing through a hedge he had trod with his foot upon a sharp thorn. he requested that the wolf pull it out, lest when he ate him it should injure his throat. the wolf consented and lifted up the foot, and was giving his whole mind to the discovery of the thorn, when the ass, with his heels, kicked his teeth into his mouth and galloped away. the wolf, being thus fearfully mauled, 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? "

驴子在牧场里吃草，看到狼正在悄悄朝他逼近。【墨阅小说网】急中生智的驴子就假装跛脚，走路一瘸一拐的。狼来到他面前，就假惺惺地询问他为什么瘸着走路。驴子回答说:“我在跨过篱笆的时候，不小心脚上扎了刺！”接着，驴子就恳求狼在吃他之前先把他脚上的刺拔掉，以免也被扎伤。狼相信了驴子的说法，于是就抬起驴子的脚，认真地察看驴的蹄子。这时，驴子突然用蹄子对准狼的脸狠狠地踢去，把狼所有的牙齿都踹掉了。得不偿失的狼，痛苦地呻吟道:“我真是自作自受啊！我生来就是以食肉为生，为什么偏要去做医生呢！”

做好自己力所能及的事情。