expression, godan verb (-mu)
a cornered rat will bite a cat; despair gives courage to a coward
Proverb meaning that even a weak person will fight back fiercely when pushed into a corner. Often used to warn against driving someone to desperation.
彼をあまり追い詰めると、窮鼠猫を噛むということになりかねない。
If you corner him too much, he might turn desperate and fight back like a cornered rat biting a cat.
弱い相手でも、窮鼠猫を噛むで何をするかわからないから気をつけて。
Even a weak opponent might do something unexpected when cornered, so be careful.