Walk into a pet shop and the average dog food label can be confusing.
“High protein.” “Natural.” “Premium.” “Human grade.” “Grain-free.” “Complete and balanced.”
Then there is the ingredient list, guaranteed analysis, feeding guide and calorie information.
Which parts actually matter?
Two names you may come across are AAFCO and WSAVA. They are often mentioned together, but they do very different things.
AAFCO, the Association of American Feed Control Officials, develops model regulations and nutrient profiles used widely in the United States. Its framework helps you understand whether a food is nutritionally adequate for a particular life stage. AAFCO itself does not test, approve or certify individual pet foods.
WSAVA, the World Small Animal Veterinary Association, takes a broader approach. Its nutrition guidance encourages owners to look at the people, processes and evidence behind a pet food company, including nutritional expertise, manufacturing, quality control, research and transparency.
So think of it this way:
AAFCO helps you ask: “Is this food nutritionally appropriate?” WSAVA helps you ask: “How seriously should I evaluate the company and evidence behind it?”
Together, they give you a much better way to read a dog food label.
Here is a simple Five Questions Framework you can use when comparing dog foods.
AAFCO vs. WSAVA at a Glance
Question 1: Is the Food Complete and Appropriate for My Dog?
Before worrying about whether chicken is the first ingredient or whether a food contains 30% protein, find the nutritional adequacy statement.
AAFCO describes this as one of the most important parts of a pet food label because it helps match a food to an animal’s nutritional needs.
Look for information indicating whether the food is:
complete and balanced;
intended for growth;
intended for adult maintenance;
intended for gestation/lactation;
or suitable for all life stages.
“Complete” means the food is intended to provide all required nutrients, while “balanced” refers to those nutrients being supplied in appropriate proportions.
Why this matters for puppies
A growing puppy does not have exactly the same nutritional requirements as a mature dog. Look for a food specifically appropriate for growth or puppies, or an appropriate all-life-stages statement.
UK and European dog food
If you are buying food in the UK or Europe, you may encounter FEDIAF rather than an AAFCO statement. FEDIAF provides nutritional guidelines for complete and complementary pet food in Europe.
The principle is the same:
Check that the food is complete and appropriate for your dog’s life stage.
Question 2: Who Formulated the Food?
Ask:
Who actually formulated this food?
WSAVA recommends looking for appropriately qualified nutrition professionals, including individuals with advanced training in animal nutrition or relevant veterinary nutrition board certification. It also recommends finding out the nutritionist’s name, qualifications and employment status.
Why does this matter?
Ingredients contain different concentrations and ratios of nutrients. For example, different animal-derived ingredients can provide very different amounts of minerals such as calcium and phosphorus. A complete formulation needs to account for these differences.
So instead of asking:
“Does this food contain good ingredients?”
also ask:
“Who designed the finished diet, and how did they ensure it meets the dog’s nutritional requirements?”
A useful question to send to a manufacturer is:
“Who formulates your diets, and what are their qualifications?”
A transparent company should be able to give you a meaningful answer.
Question 3: How Is the Food Manufactured and Quality-Controlled?
You also want to know how the manufacturer makes sure the finished product consistently matches what was formulated.
WSAVA recommends looking at quality-control processes involving ingredients and finished products, including nutrient analysis, toxicology, bacteriology and packaging or shelf-life checks.
Who actually makes the food?
The company whose name appears on the bag may not be the company physically manufacturing it.
Some brands manufacture their own food. Others use third-party manufacturers.
WSAVA recommends asking whether the food is “made by” the company or “made for” or distributed by the company.
Using a third-party manufacturer isn’t automatically a problem.
Question 4: What Evidence Supports the Food?
This is where the word “science” can become misleading.
A package might say:
“Scientifically formulated.”
But what does that actually mean?
WSAVA recommends asking what product research or nutrition studies have been conducted and whether relevant research has been published in peer-reviewed journals.
In the United States, nutritional adequacy can be substantiated through meeting an appropriate AAFCO nutrient profile or through specified AAFCO feeding protocols.
These are different approaches to demonstrating nutritional adequacy.
That does not mean that one automatically makes a food “good” and the other “bad.”
Instead, look at the wider evidence.
Ask:
Has the finished food been analysed?
What nutritional research has been conducted?
Has the company conducted feeding trials where appropriate?
Is research available in peer-reviewed journals?
Can the company provide typical nutrient analysis?.
Question 5: Can the Company Answer Your Questions?
This may be the simplest test of transparency.
Can you actually contact the manufacturer?
WSAVA recommends that companies provide accessible contact information and be able to answer additional questions about their foods, including providing an average or typical analysis of essential nutrients.
You can also ask:
Who formulated the food?
What are their qualifications?
Where is it manufactured?
Do you manufacture it yourself?
What quality-control testing do you perform?
Is the finished food chemically analysed?
Has the food undergone feeding trials?
What research has been conducted?
How many calories does the food provide?
If a manufacturer cannot or will not provide meaningful information, WSAVA recommends caution.
What About Protein, Guaranteed Analysis and Calories?
The guaranteed analysis typically gives you minimum crude protein and crude fat, along with maximum crude fibre and moisture.
Don’t treat those numbers as a complete nutritional profile.
For example, a food containing 30% protein isn’t automatically better than one containing 25%. Your dog’s nutritional needs depend on factors including life stage, activity and individual condition.
Don’t forget calories
Calories matter because two nutritionally complete foods can have different energy densities.
AAFCO requires calorie information on applicable US pet food labels, while WSAVA recommends considering calorie content when assessing a diet.
Feeding directions are also guidelines rather than absolute rules. AAFCO notes that feeding amounts may need to be adjusted according to an individual dog’s activity and condition.
This is particularly important for puppies, whose food intake changes as they grow.
Be Careful With Marketing Claims
Words such as:
“premium”
“holistic”
“natural”
“superfood”
“ancestral”
“human grade”
can make a product sound appealing.
But marketing language shouldn’t replace nutritional evaluation.
WSAVA specifically notes that terms such as “holistic” and “premium” are of little practical value when assessing nutritional quality because they are not useful nutritional measures.
The same principle applies to claims such as “high protein” or “grain-free.”
Neither tells you the whole story.
Return to the five questions.
The Five-Question Dog Food Checklist
When comparing two foods, keep this simple:
1. Is it complete and appropriate?
Is it a complete diet, and is it suitable for my dog’s life stage?
2. Who formulated it?
Can the company identify the person or team responsible for nutritional formulation and explain their qualifications?
3. How is it made?
Who manufactures the food, and what quality-control processes are used?
4. What evidence supports it?
What nutritional analysis, feeding evidence or research supports the product?
5. Can the company answer my questions?
Can you get meaningful information about the food directly from the manufacturer?
You don’t need to give a food a perfect score to make a good decision.
The framework simply helps you investigate instead of relying on the front of the package.