The Toy ball is made by extra-tough rubber, good elasticity, bite-resistant and nontoxic, non-abrasive, safe for your sweet dog grinding and cleaning their teeth. Perfect for fetch and interaction with your dog. You can add food or treats into the grooves and this can keep them busy for hours. Soft and unique surface relief, can effectively help clean their teeth and keep their gums healthy. This dog toy can easyly attract your pet's attention, help pets' intelligence improving, and is convenient to train dogs.