I thought my wife killed one of my cats with one once.
The cat was so in
need of catching the little red dot that it didn't realize it was
exhausted, until it just fell over panting and stayed on its side for the
next 20 minutes trying to catch its breath.
Poor thing. Gotta wonder what they think it is... I can get mine to
do interesting jumping tricks when playing with the laser :-) Not to
mention poucing on their own tail if you aim it right...
-JR