birds of feather.一丘之貉
black sheep.害群之马
break a butterfly on a wheel.小题大做
cast peals before swine.明珠暗投
the cat among the pigeons. 人为刀俎，我为鱼肉
even a worm will turn.狗急跳墙
go to the dogs.江河日下
love me love my dog.爱屋及乌
take a hair of the dog that bite you.以毒攻毒
kill the goose that lays the golden eggs.杀鸡取卵
kill two birds with one stone.一箭双雕
wake a sleeping dog.惹是生非
look a gift horse in the mouth.吹毛求疵
neither fish nor fowl.不伦不类
put/set the cart before the horse.本末倒置
look like a dying duck in a thunderstorm.惊慌失措
birds of feather.一丘之貉
black sheep.害群之马
break a butterfly on a wheel.小题大做
cast peals before swine.明珠暗投
the cat weeping over the dead mouse猫哭老鼠
a narrow winding trail羊肠小道
even a worm will turn狗急跳墙
black sheep害群之马。