Dogs can't spit ivory sentences.

According to Baidu liberal arts related information:

1. Dogs bite mice-mind your own business: catching mice is the instinct of cats, but dogs don't have this ability. Metaphor is to ask questions beyond the scope of duties, or to take care of things that should not be taken care of.

2. The dog bit Lv Dongbin-I don't know how to be kind: the dog also bit Lv Dongbin, a good man who did good deeds, to call names, ungrateful.

3. Throw bones at dogs-do what you like: dogs like to eat bones, and throwing bones at dogs is what dogs like, so they like it.