Hearty Barkworthies Beef Femur Bone is a long-lasting chew your dog will love! Center cut femur is full of nutritious marrow and is baked with pieces of meat and tendon attached for a savory and delicious chew. A natural source of calcium for strong bones and teeth, and rich in iron and zinc for immune health, these chews also provide energy to support brain functions and satisfy your dog's natural chewing instinct to help support healthy teeth and gums. Bones are USDA & FDA inspected and approved. Country of Origin: Brazil.