虎毒不食子 [－－－－－]

Jyutping fu2 duk6 bat1 sik6 zi2
Pinyin hǔ dú bù shí zǐ

Definitions (CC-CEDICT)
  1. a tiger, though cruel, will not devour its cubs (idiom)
  2. even wild beasts look after their young
Definitions (Wiktionary)
  1. phrase, idiomatic
    A person, no matter how vicious they are, will not harm their own children.