Rated #1 Dog Toy this year, I just had to buy for my cairn terrier who loves to play. This toy is motion sensored so whenever your pet get's near it, the bag will jump, bark, meow, spin and keep your pet busy with joy for hours. This toy gives me much needed time to get my housework done while the Doggie Bag entertains our little fellow. I was able to find it online at Amazon and it's worth every penny I spent. Runs on three triple AAA batteries. It really rocks~