A thief knows a thief as a wolf knows a wolf.
贼了解贼,正如狼了解狼.
It is a foolish sheep that makes the wolf his confessor.
蠢羊才向狼忏悔.
Don’t trust a goat with the kitchen-garden,or a wolf with sheepfold.
不能请羊管菜园,不能请狼管羊圈.
The wolf has a winning game when the shepherds quarrel.
螳螂捕蝉,黄雀在后.
He that makes himself a sheep shall be eaten by the wolf.
甘心做绵羊,必然喂豺狼.
a wolf in sheep's clothing
披着羊皮的狼,口蜜腹剑的人