This new and improved design of the classic dog bone has multiple features to keep your dog active for hours. These dog stimulating toys have multiple features that make them a perfect dog interactive toy, including a durable design for aggressive chewers and features that mimic a dog toothbrush for dog teeth cleaning. This dog pet toy is perfect for large dogs and this can also be a great education toy for dogs. Pit bulls, golden retrievers, labs and blue heelers will all love.These chewy bones for dogs are made of BPA free materials for your dogs health.