What Is AAFCO?
The Association of American Feed Control Officials (AAFCO) is a non-regulatory organization that publishes model regulations, ingredient definitions, and nutrient profiles used by U.S. states to oversee commercial kibble pet food labeling.¹
AAFCO does not:
Test pet foods
Approve pet foods
Certify manufacturers
Conduct safety or efficacy reviews
AAFCO does not regulate, test, approve or certify pet food.
Table of Contents
What “Complete and Balanced” Means
The phrase complete and balanced refers specifically to nutrient profile compliance, not to ingredient quality, processing method, or biological appropriateness.
A pet food may carry this claim if it meets one of two criteria:
Formulated to meet AAFCO nutrient profiles
Demonstrated to meet profiles through feeding trials
Both methods evaluate nutrient presence, not nutrient origin or structural integrity.
AAFCO Nutrient Profiles
AAFCO nutrient profiles specify minimum and maximum levels for essential nutrients required to support maintenance, growth, or reproduction.²
Profiles include numeric requirements for:
Protein and fat
Essential amino acids
Vitamins
Minerals
They do not:
Distinguish between whole-food and synthetic sources
Evaluate bioavailability
Account for processing-induced nutrient loss
As long as final nutrient values fall within specified ranges, the food qualifies.
Formulation vs. Feeding Trials
Formulation Method
Most dry pet foods meet AAFCO standards by nutrient formulation.
Manufacturers calculate nutrient inclusion using ingredient databases and add synthetic premixes as needed to reach minimum thresholds.
This method does not require animals to consume the food prior to market.
Feeding Trial Method
AAFCO feeding trials involve a short-term feeding protocol, typically lasting 26 weeks for adult maintenance.³
Key limitations include:
Small sample sizes
Limited duration
Narrow health markers (weight, blood values, survival)
Feeding trials assess whether animals can survive and maintain basic parameters, not whether the diet optimizes long-term health.
What AAFCO Does Not Evaluate
Credit: Kibble Facts
Degree of processing
Ingredient sourcing
Heat damage to proteins or fats
Enzyme activity
Gut microbiome effects
Chronic disease risk
AAFCO evaluates nutrient adequacy, not dietary suitability.
Ingredient Definitions and Labeling
AAFCO publishes the rendered ingredients in pet food definitions that describe what may be included under a given name.⁴
These definitions:
Permit broad material inclusion
Do not indicate quality or freshness
Do not reflect processing history
Ingredient lists describe regulatory categories, not nutritional behavior after extrusion or storage.
Why AAFCO Standards Persist
AAFCO frameworks persist because they:
Enable uniform labeling across states
Allow scalable manufacturing
Support long shelf-life foods
Provide legal clarity for enforcement
They are designed to regulate commerce, not to define optimal feeding strategies.
AAFCO and Different Food Formats
AAFCO nutrient profiles apply equally to:
Dry extruded food
Canned (retorted) food
Freeze-dried food
Fresh or frozen food
The standard does not change based on:
Moisture content
Processing intensity
Preservation method
This means foods with radically different structures may share identical complete and balanced claims.
A Regulatory Floor, Not a Health Ceiling
AAFCO standards establish a minimum nutritional floor, not a comprehensive health framework.
They ensure foods contain essential nutrients at defined levels. They do not evaluate how processing, ingredient integrity, or food structure influence long-term biological outcomes.
Understanding AAFCO clarifies why foods with vastly different manufacturing methods can carry identical adequacy claims.
Citations, Sources & Footnotes
Association of American Feed Control Officials (AAFCO). (n.d.). AAFCO Official Publication. Accessed February 3, 2026.
https://www.aafco.org/resources/official-publication/National Research Council. (2006). Nutrient Requirements of Dogs and Cats. National Academies Press. Accessed February 3, 2026.
https://nap.nationalacademies.org/catalog/10668/nutrient-requirements-of-dogs-and-catsAssociation of American Feed Control Officials (AAFCO). (n.d.). Dog and Cat Food Feeding Protocols. Accessed February 3, 2026.
https://www.aafco.org/resources/dog-and-cat-food-feeding-protocols/Association of American Feed Control Officials (AAFCO). (n.d.). Official Ingredient Definitions. Accessed February 3, 2026.
https://www.aafco.org/resources/ingredient-definitions/
