I also have a light I use on my cats and dogs and your right it is so funny to watch. I also have taken a big piece of Aluminum foil and waded it up into a ball, tied a long piece of yarn onto it and then tied the yarn to the cieling fan and turned the fan on... ha ha ha The cats go nuts and will go round and round and round, jump flip over untill they are panting trying to get that thing. Try it , your sides will hurt!
Cathy C