~Engage and entertain your dog with the Puzzle Cube from Petstages. Built with 2 squeaker balls inside, your dog will enjoy the challenge of releasing the balls for fetch and other fun play. Not only does the Outward Hound Puzzle Cube challenge your dog to release tennis balls, after the balls have been found, these squeaking tennis balls are fun to chew and fetch! Unique to the cagey cube are all the unique shapes of holes and passage points for your dog to engage and release the tennis balls inside. Made for different sized mouths, paws and teeth, the Puzzle Cube is fun for every pup! Durable synthetic rubber cube Ideal for indoor and outdoor play Length - 11cm, width - 11.5cm, height - 11cm