US vs European food standards

AAFCO — United States: The Association of American Feed Control Officials publishes model regulations and nutrient profiles. It is NOT a regulator and cannot enforce anything — individual states adopt its model into their own law and state feed control officials do the enforcing. That means enforcement varies from state to state.

FEDIAF — Europe: The European Pet Food Industry Federation publishes nutritional guidelines. It is also not a regulator — but it sits inside EU feed law, principally Regulation (EC) No 767/2009, which IS binding across member states. So the framework around it is centralized in a way the American one is not.

What they share: Both build on the same underlying science: the National Research Council's nutrient requirements for dogs and cats. Both add safety margins for processing losses. Both are updated regularly.

The precautionary principle: This is the big structural difference. Under EU law, if an ingredient is suspected of causing harm, the burden of proof falls on the industry to demonstrate it is safe. The US system generally runs the other way — substances stay in use until harm is demonstrated, and the GRAS self-certification pathway lets a company affirm its own ingredient is safe.

Ethoxyquin: A synthetic antioxidant preservative. The EU suspended its authorization as a feed additive in 2017, with existing stock to be used up by mid-2020. It remains legal in US pet food at low levels. The FDA asked manufacturers to reduce levels voluntarily in the 1990s and most major brands complied, but legal and absent are different things.

BHA and BHT: Both are restricted in EU food. In the US both are still treated as generally recognized as safe, though that is shifting — the FDA began a postmarket assessment of BHT in 2025 and ordered a new safety review of BHA in February 2026. BHA is listed by the US National Toxicology Program as reasonably anticipated to be a human carcinogen, which is a hazard classification based on animal data rather than a finding about dogs specifically.

Hygiene and sustainability: FEDIAF guidance includes production hygiene and environmental sustainability directives that have no direct AAFCO equivalent.

Feeding trials: This is the one almost nobody knows about, and it is the strongest single claim available on any bag of dog food anywhere. AAFCO recognizes two ways to substantiate “complete and balanced”: formulate to meet the nutrient profile on paper, OR run a six-month feeding trial with actual dogs under AAFCO protocols. The trial is far stronger evidence, because formulation alone does not prove a nutrient is actually absorbed. A food can hit every number on paper and still be poorly bioavailable.

Why that matters: Most foods on both continents take the cheaper paper route. A US food that has passed feeding trials has cleared a bar that formulation-only foods — European or American — have not.

Responsiveness: AAFCO adjusted its profiles for taurine and omega-3 fatty acids in response to the grain-free DCM concern, and strengthened DHA requirements for growth-and-reproduction foods. The system does move when evidence accumulates.

Complete and balanced is a floor: On either continent, that phrase means the food meets minimum legal requirements. Not that it is good. Not that the ingredients are quality. Not that the nutrients are absorbable. It is a floor, not a ceiling, and the gap between two compliant foods can be enormous.

No carbohydrate ceiling: Neither AAFCO nor FEDIAF sets a maximum carbohydrate level. A very carbohydrate-heavy food can be fully compliant.

No digestibility requirement: Neither requires a manufacturer to demonstrate digestibility, except via the AAFCO feeding trial route.

Ingredient quality is invisible: Both regulate nutrient numbers rather than ingredient quality. Two foods with identical guaranteed analyzes can be built from very different material.

Neither, cleanly. Europe is better at controlling what is allowed IN — the precautionary principle and the additive bans are real advantages. America is better at proving the food WORKS, because the feeding trial pathway has no European equivalent. If you want the strongest evidence a food actually nourishes a dog, that is an American mechanism. If you want the fewest questionable preservatives, that is a European one.

Read the adequacy statement: It is usually in small print on the back. “Animal feeding tests using AAFCO procedures substantiate that this food provides complete and balanced nutrition” is the stronger claim. “Formulated to meet the AAFCO nutrient profiles” is the weaker one. Both are legal; they are not equal.

Check the life stage: Growth, adult maintenance, or all life stages. A large-breed puppy needs a food that says it is suitable for large-size growth specifically.

If you want to avoid the preservatives: You can, easily. Look for mixed tocopherols (vitamin E) or rosemary extract instead of BHA, BHT or ethoxyquin. Plenty of US foods use them, and the shelf life is shorter rather than worse.

The question worth more than either standard: Ask whether the company employs a full-time qualified nutritionist, owns its manufacturing plants, and runs feeding trials. Those three questions tell you more about a brand than which continent's minimum it clears. The World Small Animal Veterinary Association publishes a list of exactly these questions.

Imported european food: Buying European food in the US is usually paying a premium for the marketing of a standard, not for a better food. If the specific product appeals for its ingredients or formulation, that is a reasonable reason. “Because EU standards are stricter” on its own is not.

Both standards are minimums, and both are met by foods ranging from excellent to mediocre. The regulatory question is far less useful than the manufacturer question. A US food that has passed feeding trials, from a company with a staff nutritionist and its own plants, is a better bet than an imported European food that has done neither — and vice versa.