This has to be one of the worst dog foods on the market today and sadly is Purina’s best. Very little meat and a lot of low quality grains. The by-product and fat are of the lowest quality. This food contains menadione sodium bisulfite and caramel color, both toxic in some degree to dogs. Animal digest is another extremely low grade ingredient and can include hooves, feathers, teeth and horns. It also can contain dead, diseased, deceased or dying unnamed animals.
Purina ONE Ingredient Analysis

  1. Chicken
  2. Brewers rice
  3. Corn gluten meal
  4. Whole grain corn
  5. Poultry by-product meal

Chicken, is a good meat source, but it is the only meat ingredient. When the water is removed for processing it losses at least 70% of its mass, moving it down the ingredient list.

Brewer’s rice, is a low quality grade grain and all of the nutrients have been removed.

Corn gluten meal, is the lowest quality grade of corn.

Whole grain corn, corn is hard for dogs to digest and has been linked to allergies in some dogs.

Poultry by-product meal, is an extremely low grade ingredient and includes feet, neck, feathers and undeveloped eggs.

Purina ONE Ingredient List

Chicken, brewers rice, corn gluten meal, whole grain corn, poultry by-product meal, whole grain wheat, animal fat preserved with mixed-tocopherols, soy flakes, soybean meal, animal digest, glycerin, calcium phosphate, caramel color, calcium carbonate, salt, potassium chloride, Vitamin E supplement, choline chloride, zinc sulfate, L-Lysine monohydrochloride, ferrous sulfate, sulfur, manganese sulfate, niacin, Vitamin A supplement, calcium pantothenate, thiamine mononitrate, copper sulfate, riboflavin supplement, Vitamin B-12 supplement, pyridoxine hydrochloride, garlic oil, folic acid, Vitamin D-3 supplement, calcium iodate, biotin, menadione sodium bisulfite complex (source of Vitamin K activity), sodium selenite.

Purina ONE Guaranteed Analysis

Guaranteed Analysis describes the nutrient content required by AAFCO labeling standards to be identified on every product package. Since these are guarantees, pet food manufacturers work to formulate diets that meet or exceed the minimum requirements.
Crude Protein (MIN)26.0%Phosphorus (P) (MIN)0.8%
Crude Fat (MIN)16.0%Selenium (Se) (MIN)0.35 mg/kg
Crude Fiber (MAX)3.0%Vitamin A (MIN)13,000 IU/kg
Moisture (MAX)12.0%Vitamin E (MIN)250 IU/kg
Linoleic Acid (MIN)1.4%Glucosamine (MIN)*400 ppm
Calcium (Ca) (MIN)1.0%Omega-6 Fatty Acids (MIN)*
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