Explanation:

- Raining cats and dogs: This idiom is used to describe extremely heavy rainfall. It suggests rain so intense it seems unusual.

- Option 1: Facing light rain and wind

- This is inaccurate as the idiom refers to heavy, not light, rain.

- Option 2: Raining very heavily

- This option correctly conveys the idea of the idiom. It's about a downpour, not just a drizzle.

- Option 3: Having lots of pets around you

- This is a literal interpretation which doesn't apply. The idiom isn't about actual animals.

- Option 4: Worried about cats and dogs

- This doesn't fit, as the idiom isn't related to concern for pets.