Tripett Green Beef Tripe, Duck and Salmon formula is 100% all natural and provides three sources of protein. A natural source of Omega 3 and 6, Green Beef Tripe is rich in digestive fatty acids and many other nutrients important to your dogs health. Duck, Salmon and Menhaden Fish Oil provides optimum skin and coat conditioning. Glucosamine and Chondroitin have been added to promote healthy joint cartilage. Good for all life stages including puppies and older dogs. Great for picky eaters too! Tripett is intended to be supplemented with a good quality dry dog food. No preservatives, no artificial ingredients, no fillers.