小狼

(as)greedy as a wolf
非常贪婪, 贪得无厌

cry wolf
喊“狼来了”, 发假警报

eat like a wolf
贪婪地吃, 狼吞虎咽

have [hold] a wolf by ears
骑虎难下

have a wolf in the stomach
饿极了

He who keeps company with a wolf will learn to howl.
[谚]跟狼在一起, 就会学狼叫; 近墨者黑。

keep the wolf from the door
[口]免于挨饿; 勉强度日

One must howl with the wolves.
[谚]跟狼在一起, 就得学狼叫; 入乡随俗。

sea wolf
狼 ; 任何贪食的大海鱼

海盗; 私掠船

潜艇

see[have seen]a wolf
张口结舌, 说不出话来

set the wolf to keep the sheep
叫狼看守羊; 引狼入室

the big bad wolf
令人恐怖的人或物

throw to the wolves
送入虎口; 置…于险境

wake a sleeping wolf
自找麻烦