Nylabone Puppy Teething Keys is perfect for teething puppies! This chew toy is non-toxic, made of soft thermoplastic polymer and natural flavors that discourages destructive chewing. This non-edible chew toy have bristles to help remove plaque and tartar for clean teeth and healthy gums. Nylabone Puppy Teething Keys is guaranteed to satisfy your puppy's natural urge to chew. For puppies up to 15lbs. Not recommended for adult dogs or puppies with any permanent teeth.