鸡犬不留

雞犬不留
quǎnliú
  1. lit. not even chickens and dogs are spared (idiom)
  2. fig. mass slaughter

CEDICT

不留活命比喻残酷杀戮抢劫

重編國語辭典

残酷杀戮抢劫

維基詞典

Entry Composition