The v-shaped design of the Bite n Brush lets dogs brush their own teeth with special bristles sized just right to scrub plaque and tartar from all sides of the teeth and mouth. Make sure to monitor your dog while they brush their teeth! The Bite n Brush is designed to extend the time it takes to chew a dental treat, so you can get some peace and quiet and the active ingredients can get to work. Small size recommended for dogs 10-30 lbs.