How to Read Dog Food Labels Ingredients and Nutrients:  Ingredients are listed in order of weight. Due to the high water content in meats commonly found in dog food, those ingredients are usually listed first. Lamb, chicken, and beef will have the most nutrients followed by grains such as rice and wheat. Guaranteed Analysis: This section of a dog food label breaks down the amounts of protein, fat, fiber, etc. included in the food. AAFCO Standards The AAFCO stands for The Association of American Feed