SmartBones is the next generation dog chew that has all the benefits of a rawhide chew – without the rawhide. Many veterinarians are concerned with the potential health risks associated with dogs consuming rawhide. SmartBones chews, made with real chicken, vegetables and other healthy ingredients, provide your dog with needed chewing exercise and great taste. Independent digestibility studies show that SmartBones chews are over 99% digestible and tests demonstrate that 9 out of 10 dogs prefer these chews over the leading rawhide chews. -Great taste -Safe: rawhide-free -Chewing activity promotes healthy dental care -First chew of its kind to be fortified with vitamins and minerals -SmartBones Large measures about 6.5 inches -SmartBones Large are for dogs 40 lbs and over.