狗急跳墙英语

a cornered beast will do something desperate 或 even a worm will turn

By Hook Or By Crookeven a worm will turn狗急跳墙【谚】人急造反，狗急跳墙。Even a worm will turn.

Despair gives courage to a coward. 人急造反，狗急跳墙。

我专业词典里面的解释，给你搬上来，<比喻fig.>走投无路时不顾一切的行动 when cornered,a dog in desperation jumping over the barrier; take a desperate action in a critical situation