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. A cat will move in a straight line, unless there is a really good reason to change direction. All blue blazers and black sweaters attract cat hair in direct proportion to the darkness of the fabric.
Heat flows from a warmer to a cooler body, except in the case of a cat, all heat flows to the cat.
A cat will stretch to a distance proportional to the length of the nap just taken. A cat can make her body long enough to reach just about any countertop, that has anything remotely interesting on it. A cat will accelerate at a constant rate, until he gets good and ready to stop. Cats must attend all meals when anything good is served. No rug may remain in its naturally flat state, for very long.