A dog should be fed with the highest quality animal proteins, mixed with the best sources of carbohydrates and the proper amounts of fats, vitamins and minerals. Poor quality, poorly digestible proteins have high levels of bone and cartilage from the animal by-products, eg. Soy flour, soybean meal, corn gluten meal, wheat gluten or wheat middlings are poor sources of starch. Primary high quality fiber sources are tomato pomace, beet pulp, corn bran, oat bran and wheat bran. Poultry, chicken, turkey and pork fat are good, highly digestible sources of fat.
Vegetable oils are secondary sources of fats and fatty acids and are almost as good.
Animal tallow is not quite as good a quality source of fat. Judge the labels and then buy the best food you can afford. A puppy under twelve months of age is growing rapidly and needs the extra nutrition that a puppy food provides. Again, choose a food with good quality, highly digestible ingredients from an excellent manufacturer. An adult healthy Lundehund can eat any good quality dog food.