How to choose dog food: reading labels and skipping the hype

Walk down the dog food aisle and dozens of bags promise the same thing in different words: “premium,” “natural,” “grain-free,” “holistic,” “high-protein.” None of those claims tells you whether that food is right for your dog. Figuring out how to choose dog food means looking somewhere else: the fine print on the label and what the manufacturer can actually back up.

This guide shows you how to read a dog food label step by step, compare products with real numbers, separate useful information from marketing and judge whether a food agrees with your dog once you bring it home. You won’t find brand recommendations here, just the criteria to evaluate any of them.

Start here: “complete and balanced” for the right life stage

The single most important line on a US dog food label is the nutritional adequacy statement, usually in small print on the back or side. It tells you whether the food can be fed as your dog’s only diet:

• “Complete and balanced”: provides every nutrient your dog needs daily when fed as the sole diet.
• “For intermittent or supplemental feeding only”: not complete. This covers treats, toppers, many mixers and some canned foods.

The statement also tells you which life stage the food is designed for, based on the Association of American Feed Control Officials (AAFCO) Dog Food Nutrient Profiles. AAFCO isn’t a government agency, but most states base their pet food rules on its model regulations, and the FDA oversees pet food safety.

The statement comes in two versions. “Formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles” means the recipe meets the targets on paper. “Animal feeding tests using AAFCO procedures substantiate…” means the food was also fed to dogs in a standardized trial.

If you have a puppy, also check how much to feed a puppy; if your dog is older, food is just one part of good senior dog care.

How to read a dog food label step by step

1. Product name: hints at how much of the featured ingredient is inside (more on that below).
2. Guaranteed analysis: minimum crude protein and fat, maximum crude fiber and moisture. “Crude” refers to the lab method, not the quality or digestibility.
3. Ingredient list: in descending order by weight, including water content.
4. Nutritional adequacy statement: complete and balanced, and for which life stage.
5. Feeding directions: a starting amount by body weight.
6. Calorie statement: kcal per kilogram and per cup or can. AAFCO’s model rules require it on complete and balanced foods.
7. Manufacturer or distributor name and contact details, so you can ask questions.

What the product name really tells you

AAFCO naming rules link the wording on the front of the bag to how much of the named ingredient the food contains:

Be careful with fresh meat as the first ingredient, too. It’s weighed with its water (around 70%), which mostly cooks off during production. A “chicken meal” listed second may supply more actual protein than the fresh chicken listed first.

How to compare dog foods: dry matter and calories

Compare protein and fat on a dry matter basis

Kibble is around 8–10% moisture, while canned food is 75–80%. To compare them fairly, convert to dry matter: nutrient percentage ÷ (100 − moisture) × 100.

Example: a canned food with 8% protein and 78% moisture has 8 ÷ 22 × 100 = 36% protein on a dry matter basis. A kibble with 25% protein and 10% moisture has 25 ÷ 90 × 100 = 28%. The canned food, which looked weaker on the label, actually has more protein.

Compare cost per day, not per bag

Calorie density changes how far a bag goes. Say your dog needs 1,000 calories a day. Hypothetical food A costs $50 for a 30 lb (13.6 kg) bag at 3,400 kcal/kg, so your dog eats about 294 g (10.4 oz) a day, roughly $1.08. Food B costs $60 for the same size bag at 4,000 kcal/kg, so your dog eats 250 g (8.8 oz) a day, about $1.10. Bag B costs 20% more but almost the same per day. Work out your dog’s portion with our dog food calculator, and see how much you should feed your dog to fine-tune it by body condition.

Dog food myths worth ignoring

“Grain-free is healthier”

True grain allergies are uncommon in dogs. The food allergens reported most often are proteins such as beef, dairy and chicken; among grains, wheat is the main one. Grain-free doesn’t mean low-carb either: grains are usually replaced with peas, lentils, other legumes or potatoes.

In July 2018, the FDA began investigating reports of dilated cardiomyopathy (DCM), a disease of the heart muscle, in dogs eating certain diets, many labeled grain-free and high in peas, lentils, other legumes or potatoes, including breeds not genetically prone to DCM. So far, no cause-and-effect link has been proven and research is ongoing; in late 2022, the FDA said it would not release further updates unless meaningful new scientific information emerged. The cautious takeaway: unless your dog has a medical reason to eat grain-free, there’s no need for it.

“By-products are low-quality filler”

Under AAFCO definitions, meat by-products are clean parts of slaughtered animals other than muscle meat, such as liver, kidneys and spleen, and they exclude hair, horns, teeth and hooves. Many organ meats are more nutrient-dense than muscle. Quality depends on the supplier and processing, not the word itself.

“More expensive means better”

Price reflects ingredients, but also marketing, packaging and distribution. Some pricey foods are poorly formulated, and some affordable ones are backed by serious nutrition and research teams. Use the criteria in this guide, not the price tag.

“If meat is the first ingredient, it’s a good food”

Besides the water in fresh meat, there’s a practice called ingredient splitting: listing one ingredient in several forms (rice, brewers rice and rice bran, for example) so each one lands lower on the list. Ingredient order is a clue, not a verdict.

“Natural,” “holistic,” “premium” and “human-grade”

“Holistic” and “premium” have no legal definition. “Natural” has a loose AAFCO definition about ingredient sources and processing, and says nothing about nutritional balance. “Human-grade” is only allowed when the whole product is made and stored under human-food standards; it still doesn’t tell you whether the recipe is complete.

Questions to ask the manufacturer: WSAVA’s checklist

The World Small Animal Veterinary Association (WSAVA) Global Nutrition Committee suggests asking pet food companies these questions. A good manufacturer will answer them clearly:

1. Do you employ a full-time qualified nutritionist, such as a board-certified veterinary nutritionist or someone with a PhD in animal nutrition?
2. Who formulates your foods, and what are their credentials?
3. Do your foods meet AAFCO nutrient profiles by formulation, or have they also passed AAFCO feeding trials?
4. Where are your foods made, and who runs those plants?
5. What quality control measures do you use for ingredients and finished products?
6. Can you provide a complete nutrient analysis for this food, beyond the guaranteed analysis?
7. How many calories are in a cup or can?
8. What research have you done on your products, and is it published in peer-reviewed journals?

Dry, wet or both: which format to pick

Unless it’s a dental diet designed for the purpose (look for the Veterinary Oral Health Council seal), kibble doesn’t meaningfully clean teeth. Any format can be a good choice if it’s complete and balanced and your dog does well on it.

How to tell if you chose well

Always change foods gradually, following our guide on how to switch dog food, and evaluate the results over 4–8 weeks:

• Stools that are firm, formed and easy to pick up.
• A stable weight, with ribs you can feel without pressing but can’t see.
• A shiny coat and skin without flakes or itching.
• Normal energy and appetite.

Frequently asked questions

Is dog food from the vet clinic better than grocery store food?

Not because of where it’s sold. Clinics carry prescription diets for specific medical conditions, which should only be used under veterinary guidance, as well as regular maintenance foods. A grocery store food can be complete and appropriate if it meets the criteria in this guide. What really matters is the formulation, quality control and how well the manufacturer answers WSAVA’s questions.

How much protein should a good adult dog food have?

AAFCO sets a minimum of 18% protein on a dry matter basis for adult maintenance and 22.5% for growth, and most foods exceed that comfortably. More protein doesn’t automatically make a better food: protein quality and digestibility matter too. For dogs with kidney or liver disease, the right amount is your vet’s call.

Are small-breed and large-breed formulas just marketing?

Not entirely. They change kibble size and often calorie density, since small dogs need more calories per pound than large ones. The difference matters most for large-breed puppies, which need tightly controlled calcium and calories to grow properly. For healthy adult dogs, a size-specific formula is optional.

What does “hypoallergenic” mean on a regular bag of dog food?

Outside of veterinary diets, the term doesn’t guarantee the food won’t trigger an allergy. The diets used to diagnose food allergies are either hydrolyzed protein formulas or novel-protein diets with an ingredient your dog has never eaten, fed under veterinary supervision with strict controls against cross-contamination. If you suspect a food allergy, talk to your vet before buying.

Is kibble or homemade food better for dogs?

A good-quality complete commercial food is the simplest, most reliable option for most dogs. Home-cooked food can be a good alternative, but only when a veterinary nutritionist formulates it: improvised recipes usually fall short. We explain how to do it right in our guide to homemade dog food.

Sources

• Association of American Feed Control Officials (AAFCO): Dog Food Nutrient Profiles and pet food labeling model regulations.
• WSAVA Global Nutrition Committee: Guidelines on Selecting Pet Foods.
• U.S. Food and Drug Administration (FDA), Center for Veterinary Medicine: pet food labeling and the investigation into diet and canine dilated cardiomyopathy.
• Veterinary Oral Health Council (VOHC): accepted products for plaque and tartar control.