Vet approved and recommended!
I wrote one of the reviews here and made some errors in my typing. My Dobermans are 11 months old and they have played with this light since they were 8 weeks old. We haven't had any of the trouble that one of the post talks about. I have to agree that it is additive. My dogs run this light every night. We are now on our 12th light and ordering more. Great exercise tool to keep the weight off.
I have two 1 month old Dobermans. They have played with this since they were 8 weeks old. I do have to agree that it is very addictive. Every night when it gets dark both of my dogs come to me and poke me with their nose and run out the back door to play with this. It is great for tiring them out at night when they haven't had much exercise that day. They know exactly where the light is coming from. When they can't see the laser they instantly look at my hand to see where I'm pointing it at. Great toy for dogs and haven't had any of the trouble that the other reviewer spoke of. We are now on our 12 light and ordering more.
"Not for Dogs!"
It's been shown that laser toys can very quickly create a dog obsessed with shadows and any moving light. Lasers shouldn't be used with any dogs but especially breeds developed for guarding, hunting or retrieving -- they are highly motivated to catch their prey, which they can never do with the laser, and some dogs get very neurotic from this game surprisingly fast. Not for dogs! (I haven't heard of similar effects on cats, but it seems equally frustrating for them, even if for some reason they're less prone to the shadow neurosis.)