Fun with laser pointers?

U.S. Patent No. 5,443,036

What is claimed is:

1. A method of inducing aerobic exercise in an unrestrained cat comprising the steps of:
(a) directing an intense coherent beam of invisible light produced by a hand-held laser apparatus to produce a bright highly-focused pattern of light at the intersection of the beam and an opaque surface, said pattern being of visual interest to a cat; and
(b) selectively redirecting said beam out of the cat's immediate reach to induce said cat to run and chase said beam and pattern of light around an exercise area.