After trying a pet blinker which although cute, did nothing to provide actual light and stopped working after a few weeks, I am very impressed with this light. It lights up the path better than my 23-LED flashlight, and can attach to an existing collar or use the one provided. It is a quality product and fit my 20-lb dog fine. It is highly expandable and I would imagine would fit just about any size dog...although the light may be a bit bulky/heavy for a toy-sized pup.
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Lost in the dark without it
August 7, 2007
Reviewer:
DB Dog
We like it because it's so simple to use and it works great. The batteries really last a long time.
We put the PupLight on Digby at night in our fenced in back yard. He wanders around and then he has his perimeter check to do before he finally will return to the door. If he hears or sees something, well he's off again.
With the PupLight, I can easily see him and whatever he is looking at. It's cool. We're outdoors often at night up at our cabin but I would never know where Benny is since his coat it black. Now Benny is our light carrier. We can send him to see Digby then we know what they both are doing - in the dark.
The best light out there for your best bud 
