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 BEST CAT DOG Toothbrush ! The ultra toothbrushes are more comfortable for your pets, thus give you an easier process for cleaning your pet’s teeth. Made from a strong TPE material that is intended to be bite resistant, but not bite proof. The withstand bite force is about 0 to 40 pounds. Can be used as a trainging toy to play with the dog. Allow your dog to chew on the Brite Bite Brushing Stick for Dogs for about 10 minutes at a time.