red 1. The surface is protruding. When the dog bites, it can completely rub against the teeth. During the massage, it can not only grind the teeth and clean the teeth, but also help the development of the jaw muscles of the dog! 2. Your dog will see the difference! A study conducted by a famous university has confirmed that dogs are not color blind, but only limited color recognition. When dogs are happy, they can recognize the board color target with incredible accuracy, so this bullet added visual intelligence. Helps improve your dog’s visual perception ability. 3. Interactive toys for humans and pets! Full of elasticity, you can hold it in your hand or throw it for the dog to pick it up. The owner interacts with the pet for a long time, which promotes intellectual development of the animal and healthy bone growth.