what type of figurative Language is and why

Don't be scared of James. He is all bark and no bite.

The type of figurative language used in the sentence "Don't be scared of James. He is all bark and no bite" is an idiom.

An idiom is a phrase or expression that has a meaning different from the literal interpretation of the words. In this case, "bark" refers to the loud noise that a dog makes, which typically signifies aggression or threat. "Bite" refers to actually attacking or causing harm.

The phrase "all bark and no bite" is an idiom used to describe someone who talks or behaves aggressively but does not follow through with action. It suggests that James may come across as intimidating, but he does not pose any actual threat.