Complete the tired roommate's text message about their new living situation.

"I read online that ___ sleep for 15 hours a day, but mine just runs around at 3 AM knocking things off the counter!"

The correct answer is cats.

When talking about things in general using plural nouns, English uses the zero article (no article). Romance languages usually use the definite article for general statements (like Los gatos... or Les chats...), but in English, we just say cats.