6" Marrow Bone Bones are filled with 100% bone marrow, a natural source of protein, essential omega-3 fatty acids, vitamins and minerals including calcium, phosphorus, iron, zinc, selenium, magnesium and manganese. Odor-free bones sourced from grass-fed, free-range cattle raised without any added hormones or antibiotics. Fully digestible bones are carefully prepared without any additives or artificial ingredients for a safe and scrumptious snack. Paw-fect for dogs of all sizes, this treat helps remove plaque and tartar buildup, strengthens gums and exercises your pal’s jaw as he chews. Handpicked, inspected and made in a USDA certified human-grade facility to ensure premium quality. Jack & Pup Roasted Beef Marrow Bone 6-in Dog Treats will satisfy even the most avid chewer! This gnaw-some snack is sourced from grass-fed, free-range cattle. Each bone is slow roasted and smoked with nutritious, high-density bone marrow and real pieces of meat for a hearty, savory treat.