Finding the Best Cat Food: What To Look For Our vets highly recommend that the food you feed your cat meets standards set by the Association of American Feed Control Officials (AAFCO), which oversees the regulation of pet food and animal feeds. AAFCO states that there are six essential nutrients required for cats: Water: Along with drinking water, cats also get this essential nutrient from wet food. Carbohydrates: While carbs are typically thought of as an energy source, cats have evolved to get most of their energy from protein and fat. Therefore, they have relatively low carbohydrate needs. Protein: Your cat needs protein for their cells to grow, repair, and function properly. Protein amounts and the source of protein are important considerations when evaluating the right food for your feline friend. Vitamins: Vitamins are essential for normal feline metabolism. The AAFCO states that cat foods should include vitamins A, B12, D, E, and K; thiamin; riboflavin; pantothenic acid;