狗改不了吃屎 gǒu gǎi bùliǎo chī shǐ

gǒu gǎi bùliǎo chī shǐ set phrase a dog can't stop himself from eating shit; bad habits are hard to change
Domain: Common Saying 俗语
Notes: (CC-CEDICT '狗改不了吃屎'; Guoyu '狗改不了吃屎')