If you've never tried a weak red laser running it around the floor and walls then you've probably never seen a cat go really bonkers. Just make sure it's low power and don't hit them in the eyes. My cat used to go crazy trying to catch that little red dot.
+1 on that, my old dalmatian went nuts over that. Spent hours after i turned off the red laser hunting for it and whining till my mumm gt so upset and told me that i had driven the dog insane.
So, we tried to get it into his head that he had chased the red dot away by letting him chase it down the driveway then turning it off. Nope, didnt work either, it just extended his search area.
Then my younger brother had a 'brainwave', he took some bread, rolled it into a hard little ball, really tiny, and dipped it in ketchup and left it in a corner. He moved the laser dot around, let our dalmatian, Loki (shoulda been named 'Brick' for his smarts) chase the dot to the corner where he ate the bread.
BIGGEST MISTAKE! The darn dog now associated the red dot with FOOD!
Man, took him a few weeks to get over it. Ah well, i suppose he's having a good time in canine paradise chasing and eating red laser dots.