1. The built-in sound device at the top of the toy can better attract the dog and increase the dogs interest in playing. 2. Suitable for all kinds of small, medium and large dog breeds (including ferocious dogs). 3. The zigzag grinding teeth are arranged horizontally and vertically, which can deeply clean the molars, incisors and sharp teeth of pet dogs. It can effectively remove all kinds of rice residue, dirt and dental calculus on pet dogs teeth, and protect pet dogs oral health. 4. The suction cup design can be fixed on a smooth surface and can be used at various heights. It is designed according to the dogs usage habits, which is convenient for the dog to press the base with two claws to bite. 5. Material: TPR