Bristles raised during chewing help clean teeth and control plaque & tartar build-up.

Sizes: up to 15lbs - petite or small up to 30lbs - regular or medium up to 50lbs - wolf or large over 50lbs - giant, souper or x-large

These sizes are only guidelines. Many little dogs are powerful chewers and may need a larger size. If your dog is between sizes always choose the larger size.