Primal Raw Meaty Chicken Backs are 100% human-grade, antibiotic and steroid free without added hormones. They use chicken procured from ranches in the United States. These bones are considered "soft bones" and do not splinter. Through bone consumption, dogs and cats are able to acquire an easily assimilated, natural form of calcium essential to skeletal health. Fresh chicken provides superior levels of amino and essential fatty acids and used daily they can enhance tooth, gum and jaw health. Always feed under supervision to ensure your pet does not consume these bones too quickly.