It is best not for puppies to chew bones and grind their teeth. If the dog accidentally bites the bones and then swallows them, it will easily get stuck in the throat or trachea, and may also scratch the intestines and stomach. If you want your dog to grind his teeth, you must use big bones. You cannot use chicken bones or other small bones that can be swallowed. It is best to use a dog molar stick, which can not only grind teeth but also clean the teeth and mouth, and is also very safe.