Animal Proverbs and Idioms

You can't teach an old dog new tricks.
人老则守旧。
Let sleeping dogs lie.
別自找麻煩。
Barking dogs seldom bite.
吠叫的狗不咬人。
Curiosity killed the cat.
过份好奇是危险的。
The early bird catches the worm.
早起的鸟儿有虫吃。
When the cat is away, the mice will play.
猫不在，鼠自在。
You have the memory of an elephant.
你记忆力很好。
Kill two birds with one stone.
一石二鸟，一举两得。