The goDog Retrieval goBounce adds a new twist to fetch by securely attaching rugged tennis balls to either end of a super-tough rubberised centre. The fun shape is easy to throw and bounces erratically for zany playtime. Patent pending Tough Core Technology adds a durable foam insert and bonded seams to create a more durable, safer tennis ball for longer lasting fun. The goBone floats, making it a great choice for water play. This toy is intended for interactive play and is not meant for use as a chew toy.