狗改不了吃屎

狗改不了吃屎

Literally means:

a dog can never change its habit of eating shit

Actually means:

one can never change his nature

It literally means a dog can never quit his nature of eating shit. It figuratively means it is difficult for one to shake off his ill nature. It connotes a sense of blame or contempt. Derogatory.

狗改变不了喜欢吃屎的本性。比喻人的低劣本性难以改变。含看不起或指责的意味。具有贬义色彩。