Quick answer: To read a dog food label, check five things: the AAFCO statement (is it complete and balanced for your dog’s life stage?), what the product name legally means, the first few ingredients, the guaranteed analysis converted to a dry matter basis, and the calorie content. Together they tell you far more than any claim on the front of the bag.
This is exactly how we score every food on DogFoodGrade. Below, each step uses real numbers from a label we rated, so you can follow along with any bag in your kitchen.
1. Is the food complete and balanced for your dog?
Look for the AAFCO nutritional adequacy statement first. It is usually in small print on the back or side panel, and it tells you whether the food can be fed as your dog’s only diet, and for which life stage.
- “Growth” or “growth and reproduction” means it is made for puppies (and pregnant or nursing dogs).
- “Adult maintenance” means it is for adult dogs only.
- “All life stages” means it meets the puppy standard, so it also works for adults.
- “For intermittent or supplemental feeding only” means it is a treat or topper, not a complete meal.
If you have a large or giant breed puppy, look for the extra words “including growth of large size dogs (70 lb or more as an adult)”. Large breed puppies need controlled calcium, and only foods with that wording have been checked for it.
The statement also says how the food was checked: “formulated to meet” the AAFCO nutrient profiles (made from a recipe that meets the numbers on paper), or “animal feeding tests using AAFCO procedures” (the food was also fed to dogs in a trial). Both count as complete and balanced.
2. What does the product name really mean?
The words around the meat name tell you roughly how much of it is in the food. AAFCO naming rules, which most US states follow, work like this:
| Name on the bag | Rule | What it means |
|---|---|---|
| “Beef Dog Food” | 95% rule | At least 95% of the product (not counting water) is beef. |
| “Beef Dinner”, “Platter”, “Entrée”, “Formula” | 25% rule | At least 25% of the product (not counting water) is beef. |
| “Dog Food with Beef” | 3% rule | At least 3% of the product is beef. |
| “Beef Flavor Dog Food” | Flavor rule | Beef only needs to be detectable. There may be no actual beef meat. |
So “Chicken Dog Food” and “Dog Food with Chicken” sound alike but can be very different products.
3. How do you read the ingredient list?
Ingredients are listed by weight before cooking, heaviest first. The first five or so make up most of the food, so focus there.
- Fresh meat is mostly water. Chicken or beef listed first weighs a lot before cooking, but much of that water is cooked off. A “meal” such as chicken meal is already dried, so it is a concentrated protein source even when it appears lower on the list.
- Named beats unnamed. “Chicken meal” or “salmon” tells you the animal. “Poultry by-product meal”, “fish meal” or “animal fat” do not, which makes the food harder to judge if your dog has an allergy.
- Watch for ingredient splitting. Peas, pea protein and pea flour listed separately can each sit below the meat, even if together they outweigh it.
- The long tail is normal. Vitamins, minerals, taurine and probiotics at the end are what make the food complete and balanced. They are not fillers.
4. What does the guaranteed analysis tell you?
It lists minimum protein and fat and maximum fiber and moisture, but you need to remove the water before comparing foods. The label numbers are “as fed”, water included. Converting them to a dry matter basis is the only fair way to compare a dry kibble with a wet food.
The formula is simple: nutrient % ÷ (100 − moisture %) × 100.
Example: Purina Pro Plan Sport Performance 30/20 Beef & Bison lists 30% protein and 12% moisture. 30 ÷ 88 × 100 = 34.1% protein on a dry matter basis.
Now a typical canned food listing 8% protein and 78% moisture: 8 ÷ 22 × 100 = 36.4%. The wet food that looked far lower in protein actually has slightly more once the water is removed.
Also remember these are minimums and maximums, not exact amounts. The real protein is usually a little higher than the minimum shown.
5. How many carbs and calories are in the food?
Carbs are not listed on dog food labels, so you have to estimate them; calories are listed per kilogram and usually per cup or can.
To estimate carbs: 100 − protein − fat − fiber − moisture − ash. Most labels do not list ash (the mineral content), so we use about 7% for dry food when it is missing. For the Pro Plan example: 100 − 30 − 20 − 3 − 12 − 7 = 28% as fed, or about 31.8% on a dry matter basis.
The calorie statement shows “kcal ME/kg” and usually “kcal/cup”. The same food has 489 kcal per cup. Two foods can differ by 150 calories or more per cup, so always check this before switching, and adjust the amount you feed. Every food page on DogFoodGrade has a “How much to feed” calculator that uses these numbers.
Which label claims mean less than they sound?
- “Natural” has an AAFCO definition: no chemically synthetic ingredients, except added vitamins, minerals and trace nutrients. It says nothing about quality.
- “Holistic”, “premium” and “gourmet” have no official definition at all.
- “Human-grade” should only be used when every ingredient and the whole making process meet human food standards.
- “Grain-free” is a recipe choice, not a health claim. The FDA has investigated a possible link between some grain-free diets high in peas, lentils or potatoes and a heart disease called DCM. No cause has been proven, and research is ongoing. Ask your vet if you are unsure.
What else on the bag is worth checking?
Note the lot number and best-by date before you throw a bag away. Recalls are usually limited to specific lots, and these numbers are how you find out whether yours is affected. You can check our recalls and recipe changes page for the latest FDA notices. The label must also show the manufacturer’s or distributor’s name and address, which helps you contact them with questions.
How DogFoodGrade uses the label
Every score on this site comes from these same label facts: protein, fat and carbs on a dry matter basis, ingredient quality, the AAFCO statement and recall history. The full formula is public on How We Rate. You can compare any food in the dog food database, or see the top-scoring foods by type on our best dog food rankings.
Frequently asked questions
Is the first ingredient the most important?
It matters, but not on its own. Because fresh meat is mostly water, look at the first five ingredients together and at the protein on a dry matter basis.
Are by-products bad for dogs?
Not necessarily. By-products include organ meats that can be nutritious. The bigger issue is when the animal source is not named, which makes the food harder to judge.
Why does wet food show so little protein?
Because it is about three-quarters water. Once you convert to a dry matter basis, many wet foods have as much protein as kibble, or more.
This guide is general information, not veterinary advice. Talk to your vet about what suits your own dog.