What is the number one household pet?

The #1 pet is a cat. However, there are more homes with dogs. Confusing maybe, but here's an example: For every 10 house, 8 have only one dog. Out of those 10 houses, 5 have cats, but each of those five have 2 cats, so therefore the cat is the most popular pet. The #1 cat breed is the Persian. #1 dog breed is the Labrador.