Where does the saying cats cods come from?

The saying "cats and dogs" is often used to describe heavy rain, and its origins are somewhat unclear. One theory suggests it comes from a time when heavy rain would wash deceased animals, including cats and dogs, through the streets, creating a chaotic scene. Another possibility is that it derives from the old English Word "catadupe," meaning a waterfall, which may have influenced the phrase. Overall, the exact origin remains a topic of debate among linguists.