Natural pet food. Plus essential vitamins and minerals. Ocean fish 1st ingredient. Clinically Proven: to provide complete, balanced nutrition; to maintain ideal body weight; to maintain lean muscle and avoid excess body fat. Antioxidants to maintain cellular health because they fight free radicals. Veterinarian recommended. Nature's Best cat food is clinically proven to provide complete, balanced nutrition. I'm Ryan Yamka, Ph.D. in nutrition and pet nutritionist for Hill's Pet Nutrition, Inc., the makers of Science Diet Nature's Best pet food. I've loved animals since I was a child. Growing up in New Jersey I spent many hours caring for pets at our local vet clinic. My family and I continue this spirit today with our two cats, Hokie & Pokey, who we adopted from our neighborhood shelter. Like you, I am committed to providing my cats the best nutrition available. If you read packages, you know how difficult it is to choose the best natural cat food. Many claim to provide a variety of benefits, but Nature's Best is different. It is the first and only natural cat food clinically proven to provide complete, balanced nutrition to help your cat maintain ideal body weight and lean muscle. And like the natural food you eat, Nature's Best is not only healthy, it tastes great too. At Hill's we are committed to the lifelong health of pets; that's why we employ more than 150 veterinarians, food scientists, technicians and Ph.D. nutritionists like me. We're so sure Nature's Best will make a difference to your cat's health, we guarantee your purchase. Thanks for being a cat owner who cares and for choosing Nature's Best brand cat food. Ingredient/benefit/source: Real ocean fish/ocean fish builds and maintains lean muscle. It's a high-quality, highly digestible protein without added chemicals, preservatives or colors/caught wild in ocean waters. Chicken meal/chicken meal benefits your cat's skin, coat and muscle. It's a great source of protein with fatty acids/chickens from USDA-inspected facilities. Maize gluten meal/when combined with animal protein, maize gluten meal helps build and maintain lean muscle. It contributes to lower overall levels of magnesium and phosphorus to maintain bladder and kidney health/maize grown by farmers in North America. Egg/egg helps build lean muscle and a shiny coat. It has the highest essential amino acid content of all naturally-occurring protein sources/collected from USDA-inspected facilities. Wholesome grains/brown rice, oats and barley are carbohydrate sources for energy. These wholesome grains are also a source of fiber, vitamins and fatty acids/whole grains grown on North American farms. Carrots, peas & broccoli/carrots, peas and broccoli help the immune system as a natural source of vitamins, minerals, dietary fiber, antioxidants and phytonutrients/farm grown in North America and Europe. No added sulfites. Apples & cranberries/as natural sources of antioxidants like vitamin C + E, apples and cranberries support your pet's immune system on a cellular level/farm grown in the United States. No added sulfites. Flaxseed/flaxseed gives your cat a lustrous coat and soft skin with essential amino acids and vitamin E/grown by farmers in North America. Vitamins E & C/ vitamins E and C promote body wide cellular health because these clinically proven antioxidants fight free radicals/absorbable nutritive vitamin supplements. U.S. vets' no. 1 choice. More U.S. veterinarians recommend and feed Science Diet brand pet food than any other brand. (Plus essential vitamins and minerals). AAFCO Statement: Animal feeding tests using AAFCO procedures substantiate that Science Diet Nature's Best Ocean Fish and Brown Rice Dinner Adult Cat Food provides complete and balanced nutrition for maintenance of adult cats. Made in USA.