Both you and your dog will love the WO Bone from WO Design! Made in Montana, this toy bone is designed with "play"ability, durability, and dental hygiene in mind. This bone has a unique triple twist design that provides and erratic bounce when tossed. Does your dog love to swim? The WO Bone floats!Made to be durable, this bone is composed of a unique, pet specific material that is designed for active dogs. The unique divots and bumps will rub gently on your dog's teeth and gums to help prevent plaque build up. Although it is meant to help with dental hygiene, this interactive toy is not designed to be solely a chew toy.The small bone is designed for dogs under 25 lbs while the large bone is meant for all other size dogs.