Multi-function: Double-layer sharp teeth cleaner, can effectively clean the dog's teeth. Bump: High bump on molars/360 full surround, two different bumps are suitable for different positions in the mouth. Copper bell: Built-in copper bell, make a sound to attract the dog's attention and increase the dog's interest. Chewing helps relieve boredom and prevent destructive behavior Quality: Made of rubber, safe, harmless, wear-resistant and bite-resistant, not easy to deform, reliable quality, durable, can be used for a long time without damage, very practical. Ball rope: With ball rope, it plays the function of training ball, interaction between people and dogs, and enhances the emotion between people and pets.