Idiom: It's Raining Cats and Dogs

raining heavily

Examples

• Take an umbrella
• it's raining cats and dogs.

Key rules

• It's raining cats and dogs means it is raining very heavily
• It is informal and used with "it's" for weather
• It is a fixed phrase, so do not change "cats" or "dogs"

Common mistakes

• It rains cats and dogs → It's raining cats and dogs
• It's raining dogs and cats → It's raining cats and dogs