Shark cartilage dog treats are a fantastic source of Chondroitin Sulphate, Glucosamine Sulphate, Protein & Calcium.. These are high value treats for a dog so great for reward based training. thinner pieces can normally be broken in half.Shark Cartilage is also great for pets that suffer with joint or mobility issues such as arthritis and hip dysplasia. Shark Cartilage powder is also an anti inflammatory so can reduce joint swelling and may aid boost the immune system.100% Australian caught Gummy Shark and dried in Australia. Gummy shark is used in fish and ship shops in Australia and generally sold under the name flake. We use the left overs.Gummy shark is classed as fully sustainable and has a quota which is strictly monitored by the Australia Fisheries.http://www.afma.gov.au/portfolio-item/gummy-sharkWe 100% do not use unsustainable, endangered shark species for any of our shark products.Product of Australia: Manufactured in Australia using 100% Australian SharkSingle ingredient product with no preservatives, additives, colours, added sugar, or anything else!