Crazy Pet Bumble Ball is a patented interactive mortorized dog toy. Keep your pets entertained with the unpredicatable jumps, shakes, wiggles, bumbles and more. It"s specifically reinforced for pets. * Entertain your pets for hours * For small to medium sized dogs, not a chew toy, not for agressive dogs * Product Dimensions: 4.5 x 4.5 x 4.5 inches * Includes 3 alkaline AA batteries