Law of Cat Inertia - A cat at rest will tend to remain at rest, unless acted upon by some outside force - such as the opening of cat food, or a nearby scurrying mouse.
Law of Cat Motion - A cat will move in a straight line, unless there is a really good reason to change direction.
Law of Cat Magnetism - All blue blazers and black sweaters attract cat hair in direct proportion to the darkness of the fabric.
Law of Cat Thermodynamics - Heat flows from a warmer to a cooler body, except in the case of a cat, in which case all heat flows to the cat.
Law of Cat Stretching - A cat will stretch to a distance proportional to the length of the nap just taken.
Law of Cat Sleeping - All cats must sleep with people whenever possible, in a position as uncomfortable for the people involved, and as comfortable as possible for the cat.
Law of Refrigerator Observation - If a cat watches a refrigerator long enough, someone will come along and take out something good to eat.