The Nylabone puppy Teething Keys are designed for teething puppies to help assist in the growth and development of the teeth and jaws. The keys have a tasty bacon flavour to encourage chewing, but please note these keys are not an edible chew. Chewing on the teething keys also helps keep your puppies teeth clean and control plaque and tartar build up. These teething keys are not suitable for adult dogs, puppies with adult teeth or powerful chewers.