SmartBones chews are made with real chicken and provide your dog with needed chewing exercise and great taste. SmartBones are rawhide-free and contain real chicken filet wrapped in a peanut butter flavored vegetable chew. It is the first chew of its kind to be fortified with vitamins and minerals. Small sized SmartBones are suitable for dog breeds up to 20-pound. Independent digestibility studies show that SmartBones chews are over 99-percent digestible and tests demonstrate that 9 out of 10 dogs prefer SmartBones chews over the leading rawhide chews. SmartBones are the healthy alternative to rawhide.