Law of Cat Acceleration
A cat will accelerate at a constant rate, until he gets good and ready to stop.

Law of Cat Embarrassment
A cat's irritation rises in direct proportion to her embarrassment times the amount of human laughter.

Law of Milk Consumption
A cat will drink his weight in milk, squared, just to show you he can.

Law of Furniture Replacement
A cat's desire to scratch furniture is directly proportional to the cost of the furniture.

Law of Cat Composition
A cat is composed of “Matter” plus “Anti-Matter” plus “It Doesn't Matter”.

There are lots more laws. They make perfect sense to cats and people who live with cats. Link -via the Presurfer

Image found at I Can Haz Cheezburger.