The pet food industry is regulated by AAFCO (the Association of American Feed Control Officials), the FDA/CVM (Food and Drug Administration/Center for Veterinary Medicine), the USDA (United States Department of Agriculture), and the FTC (Federal Trade Commission). The ingredients list state all of the items that are contained in the food from the highest quantity listed first to the least listed last. The first ingredient is the most important one because this is what the food has most of. The first ingredient in a quality pet food should be a good quality protein like found in all of the Evanger’s varieties; aside from the Vegetarian and 100% Sweet Potato, which are meat-free and vegetable-based. When a meat is listed on our labels, it is a muscle meat like chicken, turkey, beef, lamb, fish, and more; only the best quality proteins. The biological value of a protein determines how well the body can use it. The better the body can use a protein, the higher the biological value it will have. Protein eaten provides the body nitrogen and amino acids, the building blocks for a healthy body. There are 9 essential amino acids that dogs and cats cannot make -themselves and therefore, must be provided for in the diet. Meat, poultry, fish, eggs and dairy all have a high biological score. For example, eggs have a biological value of 100; beef has a biological value of 80. As far as our vegetarian diet goes, the combination of peas and whole brown rice provide complementary proteins. In other words, separately, these ingredients may not score high because separately, each is missing an essential amino acid (peas are missing methionine while whole brown rice is missing lysine) but together they complement each other with the end result of a good quality, high biological value protein source.