Compounds of 窮鼠

• 窮鼠
  (n) cornered rat or mouse
• 窮鼠噛猫
  (exp) A cornered rat will bite the cat
  One who is cornered will fight like a devil
• 窮鼠猫を噛む
  (exp) a cornered rat will bite a cat
  despair turns cowards courageous