Flexible chew. Specifically designed for teething puppies. Helps clean teeth and control plaque and tartar. Veterinarian recommended. Nylabone Flexible Puppy Teething Keys are not designed for powerful chewers or for puppies with any adult teeth. These chews assist in the growth and development of teeth and jaws, while the irresistible bacon flavor encourages puppies to develop non-destructive chewing habits. During normal chewing, tiny bristle-like projections are raised which help clean the dog's teeth. If these tiny pieces (about the size of a small grain of rice) are ingested, they should pass through without effect. However, a dog should not be able to break off large pieces of any non-edible chew. Nontoxic. Nylabone is proud of our reputation for quality and bringing innovation and superior canine dental health to your pet. Nylabone - the leader in responsible animal care for over 50 years! Made in China.