Cat Laws of Physics

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A couple of years back I ran across a site with great cat jokes. However, they were unattributed, and the author of the blog post didn't even know where they came from. But they were funny, so she posted them anyway.

I was re-reading some fun old jokes tonight and ran across this one again. So I tracked down the link to the book at Amazon (see below).

I've excerpted out a small piece of the Cat Physics Jokes section of the book, which you can find on Page 178 of Planet Cat: A CAT-alog, sold at

A Few of the Laws of Cat Physics

  • 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's a good reason to change direction.
  • Law of Cat Thermodynamics: Heat flows from a warmer to a cooler body, except in the case of a cat, all heat flows to the cat.
  • Law of Cat Magnetism: All clothing attracts cat hair in direct proportion to the degree of color difference between the cat hair and the fabric color.
  • 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 as is possible for the cat.
  • Law of Cat Elongation: A cat can make its body long enough to reach just about any countertop which has anything remotely interesting on it.
  • Law of Cat Acceleration: A cat will accelerate at a constant rate until he gets good and ready to stop.
  • Law of Rug Configuration: No rug may remain in its naturally flat state if a cat is present.

Planet Cat: A CAT-alog

The book contains even more of these physics laws, as well as a ton of other cat humor!

Do you like cat jokes? Share your favorites with us in the comments...