Barkworthies Knuckle Bone Fillets are a perfect beefy treat for medium and large breed dogs! Barkworthies Knuckle Bone Fillets are extra-long lasting, durable dog chews that are great for aggressive chewers. Barkworthies Knuckle Bone Fillets are baked with the meat and tendons still attached which will encourage chewing, giving your dog’s teeth a natural flossing and provide them with a nice dental workout. Barkworthies Knuckle Bones Fillets are also a great calcium rich dog chew. Calcium plays a big role in your dog's skeletal, joint and oral health. Barkworthies Knuckle Bone Fillets come from grass-fed, free-range cattle. These Knuckle Bone Fillets are FDA approved and sourced straight from Brazil. Brazil is a leading beef producer and one of the highest quality beef sources in the world.All natural, FDA approved knuckle bones that're sourced from grass-fed, free-range, Brazilian cattle. High in calcium, iron and zinc which helps your dog's body fight off infection, maintain a healthy immune system, and provide energy to help support brain functions. Baked to rid the product of any possible bacteria and locking in natural flavor for an irresistible flavor with tendons still attached to give your dog an extra dental workout. Barkworthies are preservative-free, hormone-free, and antibiotic-free. Contains no grains or gluten. Long lasting for medium to large breeds and provides a durable chew for aggressive chewers. Chewing also supports dental health by cleaning teeth of plaque and tartar.