This toothbrush is designed for small to extra small dogs, puppies and cats. The Puppy Polisher Pearl toothbrush is made from a 60% wheat straw composite bioplastic material. It has thousands of silky bristles to provide the deepest cleaning action while yet gentle on your dogs sensitive gums. This brush comes in a breathable reusable container for easy and clean storage. Also includes silicone tongue scraper. Most dog toothbrushes are hard and rigid, making the brushing process painful and difficult. Our Puppy Polisher brush makes the process painless yet effective in plaque and debris removal due to the ultra fine bristles. PBT (Polybutylene terephthalate) polymer bristles absorb less water than conventional nylon bristles, preventing bacteria growth. Puppy Polisher brushes are always BPA free. Wash well and dry after use.