3 sizes of dog toothbrushes: Suitable for all Small Medium Large Dogs. Choose the right size based on the size of the dog. Made of high quality rubber, nontoxic ,durable, 360-degree bristle configuration, bite resistance and easy to clean Self-dispensing toothpaste for cleaner teeth. Contains stabilizing base so that your pet can hold the toothbrush easier. 2-Side Bristle Line Grooves--Clean dog's teeth down to the gum line. NOT INTENDED AS CHEW TOY - The dog toothbrush is not intended as a chew toy and should not be given to dogs independent of owner use. Proper owner use and supervision is required.