BLUE Bones are tasty and highly digestible dental chews that will help to freshen your dog's breath and make his teeth sparkle. They are the only dental chew bones with a unique blend of natural ingredients that help promote specific health benefits. They contain Glucosamine and Chondroitin to help promote joint health, Taurine to help promote heart health and Vitamins A, C & E to help support the immune system. BLUE Bones are made with the finest natural ingredients, have no chicken or poultry by-product meals, and are corn, wheat and soy free. Regular Size is ideal for dogs 25 - 50 pounds.