賊了解賊，正如狼了解狼。
It is a foolish sheep that makes the wolf his confessor.
蠢羊才向狼懺悔。
Don’t trust a goat with the kitchen-garden,or a wolf with sheepfold.
不能請羊管菜園，不能請狼管羊圈。
The wolf has a winning game when the shepherds quarrel.
螳螂捕蟬，黃雀在後。
He that makes himself a sheep shall be eaten by the wolf.
甘心做綿羊，必然餵豺狼。
a wolf in sheep's clothing
披著羊皮的狼, 口蜜腹劍的人
1.Don’t trust a goat with the kitchen-garden,or a wolf with sheepfold. 不能請羊管菜園，不能請狼管羊圈。
2.Who keeps company with wolves, will learn to howl. 和狼在壹起，就會學狼叫。(入鄉隨俗。)
3.When the wolf grows old, the crows ride him.狼老被鴉欺。
4.A growing youth has a wolf in his belly. 青年成長時，食量大如狼。
5.The6.The wolf may lose his teeth, but never his nature.狼牙會掉，狼性難改。(江山易改,本性難易。)
7.It is a foolish sheep that makes the wolf his confessor.蠢羊才向狼懺悔。
9.The life of the wolf is the death of the lamb.有活的狼就有死的羔羊。
10.The lone sheep is in danger of the wolf.孤羊逢狼，必然遭殃