Working Dog Nutritional Requirements: What a Service Dog Needs

Updated September 14, 2026 · first published December 13, 2018Rewritten in full against the current regulations

There is a sentence on the Association of American Feed Control Officials’ own consumer page that almost nobody quotes. It says that “a service, hunting or working dog or a pregnant or nursing pet may not receive enough nutrition from a food designed for a sedentary adult house pet.”

That is the organization whose model language governs pet food labeling in the United States, telling you in plain English that a service dog needs more than an ordinary bag provides.

Now here is the part that matters. AAFCO has exactly two nutrient profiles for dogs: Growth and Reproduction, and Adult Maintenance. There is no working dog profile. No performance profile. No athletic profile. The regulator’s own model language names your dog’s job, admits the need, and then offers no standard to meet it.

So this article does two things. First, it answers the question directly — how much a service dog actually needs, with the numbers, at the top where you can use them. Then it explains why no bag on the shelf can promise you that number, and what the words on the front are really doing.

It names no product and recommends no brand. That is deliberate: the standard has to be written before and independently of any product, or it is not a standard at all.

What a service dog actually needs

Start with the arithmetic, because it is the part you can do yourself and the part nobody selling you a bag wants you anchored to.

The standard clinical calculation, from the Merck Veterinary Manual, begins with resting energy requirement:

RER = 70 × (body weight in kilograms)^0.75

That is the floor — what the dog burns doing nothing at all. Everything else is a multiplier on top of it. Merck puts adult maintenance for an ordinary pet dog at roughly 1.8 × RER intact, 1.6 × RER neutered, and 1.4 × RER for a dog prone to obesity.

A service dog is not an ordinary pet dog, and the published figures say so.

How much more than a pet dog?

The veterinary nutrition reference on this, Wakshlag and Shmalberg’s 2014 chapter in Veterinary Clinics of North America, breaks it down by workload. Their baseline is active adult maintenance at 132 kcal per kg of metabolic body weight — and from there:

Read the third row again, because it is the answer to the question most handlers are actually asking. Even a service dog whose handler is largely sedentary sits above active pet dog maintenance — not at it, and nowhere near a sled dog.

More than a couch potato. Less than a police dog. That is the band, and it comes from the veterinary literature rather than from a bag.

Why an alert dog costs more than a calm one

Here is the study that makes the case, and it is the most useful piece of research on this page.

In 2015, Mullis, Witzel and Price published in PeerJ the first measurement of maintenance energy requirements in detection dogs — twenty adult dogs doing odor, explosive and human detection, weights tracked over six months against actual intake.

Their result: 136 ± 38 kcal per kg^0.75, or 2.0 × the calculated resting energy requirement, with individual dogs ranging from 1.1 to 2.8.

Two things about that number matter more than the number itself.

The first is what these dogs were doing. In the authors’ own words: “The dogs in this study did not perform strenuous work but were active and alert during their working hours.” Not sprinting. Not pulling. Standing, moving at a walk, searching — and running at twice their resting requirement while they did it.

The second is the finding buried in the statistics, and it is the one that should change how you think about your own dog. The researchers tested both hours worked and number of searches performed against energy requirement. Hours worked was not statistically significant. Number of searches was (p = 0.0033).

It was not time on the clock that cost energy. It was the count of discrete alert-and-assess events.

That is what a service dog does all day. Not one search — hundreds of small ones. Scan the room. Check the handler. Read the change in her breathing. Reposition. Track the exit. Assess the approaching stranger. Return to the handler. A mobility dog holding a down-stay in a waiting room is not resting; she is monitoring, and monitoring has a metabolic cost that sitting on a sofa does not.

What the cost actually is — and what it is not

Be precise about the mechanism here, because the obvious explanation is wrong and it is worth not repeating.

It is not that the brain burns extra calories. That is a popular idea and the evidence does not support it. Brain tissue runs at a high fixed baseline whether an animal is solving a problem or dozing; mental effort barely moves total energy expenditure in any species that has been measured.

What costs energy is arousal — and arousal is physical, not mental. A vigilant dog carries elevated heart rate and muscle tone. She holds postural readiness instead of slumping. She makes constant small movements — head turns, weight shifts, ear and eye tracking — that never register as exercise and never stop. She wakes and resettles rather than sleeping through. She is, in the language of the Mullis paper, active and alert, and both halves of that phrase carry a bill.

That is a measurable physiological state. “Her brain is working hard” is a metaphor for it. Only one of those belongs in a feeding decision.

Nobody has ever measured a service dog’s day

This is worth stating as the finding it is. Systematic searching turns up no published study measuring the activity level or energy expenditure of assistance dogs. No accelerometry, no doubly-labeled water, nothing — not for mobility dogs, psychiatric service dogs, guide dogs or medical alert dogs. Canine accelerometry studies exist for other populations. Not for this one.

The population being sold “working dog” food is the one population nobody has bothered to measure.

And the gap cuts both ways. It is why nobody can hand you a service dog multiplier with any confidence — but it is equally why the reflexive “she’s just a pet dog, feed her like one” is an assumption rather than a finding. The nearest measured population, doing non-strenuous alert work, came in at 2.0 × RER.

Check the major veterinary consumer pages on this and you will find they do not distinguish service dogs at all. They fold them into a single “working and service dogs” category alongside police and sled dogs, and then answer the sled dog question. Your dog is not in that answer.

What to actually do with this

Run RER for your dog’s weight. Start at 1.8 × RER if she is neutered and doing ordinary public access work, 2.0 × if she is doing alert or detection work or working long days. The dog feeding calculator runs the formula for you.

Then ignore the number.

Not permanently — but subordinate it, because Merck attaches a caveat that belongs on the fridge: “Any given animal may require as much as 30% more or less of the calories calculated for its body weight than another animal with the same body weight.” A 30% band on either side of your starting figure is wider than the entire difference between a pet dog and a working dog multiplier.

The formula gets you into the right neighbourhood. Your hands on her ribs tell you the address. Body condition is the instrument; the calculation is just where you point it first.

Then why is there no working dog food to buy?

Because there is no standard for one to meet.

AAFCO publishes two dog profiles: Growth and Reproduction, and Adult Maintenance. A food labeled “performance,” “working formula,” “sport” or “high energy” is legally an adult maintenance food. The words on the front describe the marketing, not a standard the food had to clear.

That does not make those foods bad. Many are genuinely more calorie-dense and higher in fat, which is useful if you need to deliver more energy without more volume. It means the claim on the bag is not a promise anyone checked. You are buying a formulation choice, not a certification — so choose a complete and balanced adult food you have reason to trust, and solve the energy question with the amount, not the adjective.

The one real exception: scent and alert work

If your dog does medical alert or scent detection, diet composition — not just quantity — has measurable effects.

In a controlled crossover study of seventeen detection dogs, dogs were 1.42 times as likely to find a target on a high-polyunsaturated-fat diet than on a high-fat diet. The high-PUFA diet was the corn oil one, which is a pleasing detail given where this article is about to go on corn.

The same body of work found dogs were 1.49 times as likely to find a target before exercise as after, and that dehydration of the nasal mucosa directly degrades odorant detection. For an alert handler the takeaway is measured and free: a hot, tired, dehydrated dog alerts worse.

On hydration, one more useful finding. Detection dogs working in an average of 85°F offered a chicken-flavored oral electrolyte solution drank 15.61 ml/kg/hour, against 7.04 with plain water. Flavor drove the intake, not electrolyte content. That is the defensible reason to flavor the water — and it sits beside the fact that electrolyte supplements themselves have never been associated with a proven performance benefit.

While we are there: supplements aimed at working dogs mostly do nothing, and two have been measured doing harm. Greyhounds ran slower on a gram a day of vitamin C, and slower on 1,000 IU a day of vitamin E.

The short version of everything below

You now have the answer. The rest of this page is why you cannot buy it with confidence.

Nobody approves a dog food formula before it is sold. “Complete and balanced” means one of two things: a spreadsheet calculation no animal ever ate, or a twenty-six week trial that can finish with six dogs and four blood tests. The vitamins that make a food “complete” come from a supply chain concentrated almost entirely in one country, and the federal rule lets a manufacturer verify them by reading a certificate rather than testing the drum — and when that has failed, it has failed thirty-fold and sixty-fold, not by percentages. When researchers put sixty-one foods through a laboratory in 2025, every one of the twenty-three mass-market bags passed and forty percent of the boutique ones failed.

The one dietary intervention ever proven to extend a dog’s life is not in any bag, costs nothing, and is advertised by no one. It is at the end of this article.

Who sets the rules, and what they do not promise

AAFCO is not a regulator

This is the single most misunderstood fact in the subject, and AAFCO says it in its own words: “AAFCO itself has no regulatory authority whatsoever.” The FDA says the same independently. AAFCO writes model language; states choose whether to adopt it. So when a bag or a blog says a food is “AAFCO approved,” it is describing something that does not exist — AAFCO is blunt about it: “AAFCO does not approve, certify or otherwise endorse pet foods.” The same goes for “WSAVA approved”; its Global Nutrition Committee “does not endorse, approve, recommend or support specific products or companies.”

The FDA requires that animal food be safe, sanitary and truthfully labeled — but the agency states directly that food for animals “doesn’t need FDA’s pre-market review to be legally marketed.” And read 21 CFR Part 507 precisely, because a great deal of marketing depends on people not doing so: it governs safety and sanitation. It does not govern nutritional adequacy. Nothing in it requires a manufacturer to demonstrate that a food sold as complete and balanced actually meets a nutrient profile. The FDA–AAFCO Memorandum of Understanding expired on 1 October 2024 and was replaced with guidance documents, not a rule. A completed consultation is not an approval.

What does “complete and balanced” actually mean on a dog food bag?

It means the food met one of two AAFCO routes. Either it was formulated on paper to match a nutrient profile, in which case no animal ate it before the claim was made, or it passed a feeding trial. It is a floor, not a grade, and it says nothing about ingredient quality, digestibility, or whether the finished bag was ever tested. The full mechanics are in what “complete and balanced” actually means.

The strongest claim on a bag is six dogs and four blood tests

The feeding trial is the higher of the two routes. It is what a company means by “tested in dogs,” and it is the claim people pay a premium for.

Here is the protocol, from AAFCO’s own published feeding protocols:

“A minimum of eight healthy adult dogs at least one year of age and of optimal body weight shall be required to start the test.”

“The test shall run for a minimum of 26 weeks.”

“A number of dogs, not to exceed 25% of those starting the test, may be removed for non-nutritional reasons or poor food intake.”

Twenty-five percent of eight is two. A trial can finish with six dogs.

“No individual dog shall lose more than 15% of its initial body weight.”

“Hemoglobin, packed cell volume, serum alkaline phosphatase and serum albumin shall be measured and recorded at the end of the test.”

Four blood values. That is the complete list. No taurine. No vitamin D status. No bone density. No cardiac imaging. No lifespan.

Six to eight adult dogs, six months, four blood tests, and a pass so long as no dog loses more than fifteen percent of its body weight. That is the most rigorous nutritional adequacy claim a bag of dog food can carry in the United States.

The FDA sets out both routes plainly. The other route — formulation — is a calculation run against a nutrient database. It is not fraudulent and it is not lazy; it is how most food is qualified, and a competent formulator with good data produces a good result. But AAFCO itself warns that “formulating a product according to the Profiles is only one part of a nutritionally sound, scientific development.”

What happens when somebody actually measures the food

In December 2025, researchers published an analysis of sixty-one adult and senior dog diets from twenty-five brands in Frontiers in Veterinary Science, run through a laboratory and compared against AAFCO adult maintenance requirements.

Eighteen percent — eleven of sixty-one — failed at least one requirement. Broken out by market tier:

Seventeen individual failures across four minerals: potassium below minimum, calcium above maximum, phosphorus above maximum, and calcium-to-phosphorus ratios above two to one.

Price did not predict compliance. It inverted it.

This is one exploratory study and it is not the last word. But it is directly measured, open access, and it points the opposite way from every assumption the premium tier is built on. A separate 2026 analysis of ninety-six products found only 82.3 percent met their own label’s guaranteed analysis for the seven mandatory nutrients.

If you are disabled and on a fixed income, and you have been made to feel you are letting your dog down by buying the cheaper bag, that is the number to hold onto.

Where the vitamins actually come from

This is the part of the subject that essentially nobody writes about, and it is the most important thing on this page.

The vitamins in your dog’s food are not extracted from the chicken and the sweet potato. They are synthetic or fermentation-derived compounds, manufactured industrially, blended into a premix by a specialist supplier, and dosed into the batch at fractions of a percent. Roughly eighty percent of the pet food industry buys premixes rather than making them.

A November 2025 supply chain assessment prepared for the Institute for Feed Education and Research put China’s share of global production capacity in 2023 as follows:

The same assessment reports the United States relies on China for 78 percent of total vitamin imports. For biotin, folic acid and B12, an earlier assessment found there are no other sources.

This is not a claim about Chinese manufacturing quality. It is a claim about concentration. When one input has one source and every brand on the shelf buys from it, a single failure is not a brand problem. It is an industry problem.

The check is a piece of paper, and it has failed

The governing rule is 21 CFR 507.110. It permits a manufacturer to verify a supplier by onsite audit, or by sampling and testing, or by reviewing the supplier’s records. Testing the drum is one option among several. Reading the certificate that came with the drum satisfies the rule.

Here is what that has produced, quoted from the FDA’s own warning letters:

Three examples, quoted from the FDA’s own warning letters. To Hill’s Pet Nutrition, November 2019: “Your firm did not obtain Certificates of Analysis (COA) upon receipt of vitamin premix from your supplier.” To Sunshine Mills, June 2019: five shipments of an ingredient the firm did not know contained roughly sixty-seven times the intended vitamin D potency, unnoticed. To DSM Nutritional Products, October 2019 — the premix supplier at the root of it — two batches assayed at 2,903 percent of the amount claimed, caused by vitamin D and vitamin E drums of “similar appearance,” the wrong drum selected, and no secondary review.

The Hill’s recall that followed covered thirty-three varieties across eighty-six lots, measuring up to thirty-six times the AAFCO maximum for vitamin D.

Be careful with what gets said next about that recall, because the internet is not. No FDA document publishes a confirmed count of dogs killed; circulating figures trace to advocacy sites and litigation filings. Vitamin D toxicity is real and can cause kidney failure and death — but “reports to the FDA” and “confirmed deaths” are different things, and anyone who blurs them is selling you something.

The pattern is the point

Sixty-seven-fold. Twenty-nine-fold. Thirty-six times the maximum. Zero thiamine where 5.6 mg/kg was required. And underneath all of it, melamine in 2007 — 424 confirmed cases, 278 deaths — substituted into wheat gluten precisely because it is full of nitrogen and the standard protein test measures nitrogen.

When this industry fails, it does not fail by a few percent. It fails by orders of magnitude, because the failure mode is not sloppy formulation — it is the wrong drum, the wrong certificate, the wrong ingredient entirely. And in almost every case, the problem was found by owners and their veterinarians reporting sick animals, not by testing that caught it first. The full record is in the dog food recalls, and what they have in common.

That is the honest answer to “is my dog’s food safe?” It is very probably fine. The system that makes it fine is not the one you think it is.

What gets lost between the mixer and the bowl

A food can be correctly formulated and still not deliver what the label says. A Kansas State University thesis on nutrient stability found vitamin A retention of 27 percent after processing and normal storage, falling to 3 percent under stressed storage. Extrusion binds lysine into a form the dog cannot absorb — a review in Nutrition Research Reviews found the total-to-reactive lysine gap running as high as 61.8 percent. And a 2022 review found zinc oxide sources ranging from 22 to 93 percent relative bioavailability — the identical word on the label, differing four-fold in what the animal absorbs.

The practical part is free. “Stressed storage” means a plastic bin in a hot garage. The FDA says store dry food below 80°F in its original bag, top folded down; Tufts adds that opened dry food should be used within two to three months. If you use a bin, put the whole bag inside it rather than pouring the food in loose.

What the label cannot tell you

Lisa Freeman, a board-certified veterinary nutritionist at Tufts, wrote the sentence that ought to be printed inside every pet store: “The ingredient list is one of the most useless aspects of the pet food label.” Ingredient order is pre-cooking weight including water. Ingredient splitting is legal and undetectable. Crude protein is a nitrogen assay, which is exactly how melamine worked. A systematic review of eighteen studies found undeclared ingredients in a median of forty-five percent of diets tested. The full mechanics are in how to read a dog food label.

And on “fillers” — the word is pointed in the wrong direction. Corn has 92.95 percent dry matter digestibility in dogs. Powdered cellulose, which is wood pulp, produced less fermentation product than feeding no fiber at all while adding half again as much stool. The word got attached to the ingredient with 93 percent digestibility and never to the one with 2.6 percent. The grain evidence is graded in is grain-free dog food bad for dogs.

The words that cost you money and mean nothing

And on “ancestral” and “biologically appropriate”: in 2013 a team published in Nature the genomic signature of dog domestication, finding ten genes with key roles in starch digestion and fat metabolism under selection. Starch tolerance is a domestication trait, not a compromise. “Feed him like a wolf” is a claim about a species your dog is not. The wolf premise also underpins raw feeding, which raises a separate question that has nothing to do with nutrition once your dog has public access rights.

Who owns the brand, and who is rating it

Two things get sold to you in the pet food aisle. The first is that small, independent, premium brands are the honest alternative to the big companies. Here is who actually owns them.

Blue Buffalo built its entire identity on attacking the big pet food companies. It is General Mills. Orijen and Acana are Mars. Merrick is Purina. Two of the remaining “independent natural” names are owned not by a food company but by private equity firms, whose objective is a return inside a fund’s life. You are frequently choosing between two products from the same parent and paying a large premium for the bag design.

Plant ownership varies too. The Pet Nutrition Alliance’s manufacturer survey found companies ranging from zero percent plant ownership — everything made under contract by someone else — up to 95 percent, and the majority contacted did not respond at all, which is itself a finding. There is a two-word test on most bags: “Manufactured by” means they own the plant. “Manufactured for” or “distributed by” means they do not.

And the site rating the food

The largest consumer pet food rating site in the English-speaking world was founded by a dentist and acquired by Wag! Group in January 2023 for $9 million, reporting $1.4 million and $1.6 million of revenue in the two following quarters alongside “expanded partnerships with premium pet food brands.” That revenue is referral commission — a share of what you spend when you click through and buy.

But the credential is not the point, and neither is the commission on its own. The structural problem is that the ratings are derived from what is printed on the label. Everything this article has covered — bioavailability, formulation competence, storage stability, whether the drum was ever tested — is invisible on a label. A star rating derived from reading a package is a rating of the packaging.

Concretely: one formula in a line we are trialling carries an AAFCO adequacy statement with an explicit exception excluding the growth of large-size dogs. For anyone raising a large-breed service dog prospect that is the most safety-relevant sentence on the bag, because excess calcium causes osteochondrosis in puppies who cannot down-regulate absorption — the thing that ends working careers before they start. The rating did not reflect it, because a rating built from the ingredient panel never reads the adequacy statement.

So: before you trust any rating of a dog food, ask what it was calculated from. If the answer is “the ingredient list,” you have an assessment of the panel on the back, not of the food in the bag.

And we have to apply that to ourselves. Any site that reviews dog food, including this one, faces the same question: who pays, and does the payment scale with the price of what you are persuaded to buy? That is why the standard on this page was written before any review, and why nothing here recommends a product.

Older and retiring dogs need more protein, not less

The old advice to restrict protein in senior dogs is outdated. The National Academies state that older dogs “appear to require somewhat more protein to maintain their protein reserves, perhaps as much as 50% more,” while needing about twenty percent fewer calories. Higher protein density — not a “senior” bag chosen for the word on the front. That matters most for a dog reaching the end of her working life, which we cover in retiring a service dog.

And if you are managing an arthritic working dog: a 2022 systematic review and meta-analysis found omega-3s had the highest weighted efficacy in canine osteoarthritis, while glucosamine and chondroitin showed a “very marked non-effect” — 88.9 percent of trials showing no efficacy. Glucosamine is the best-selling joint supplement in the pet aisle. The rest is in do joint supplements work for dogs.

The seven questions that replace reading the ingredient list

From the WSAVA Global Nutrition Committee’s guidelines, with additions from Tufts. Email them to the manufacturer. The answers, and the willingness to answer at all, tell you more than the whole back panel.

1. Do you employ a full-time qualified nutritionist — a PhD in animal nutrition, or board certification by the ACVN or ECVCN?
2. Who formulates your diets, and what are their credentials?
3. Do you own your manufacturing plants?
4. What quality control do you run on incoming ingredients and finished product? Specifically: do you test the vitamin premix, or accept the certificate?
5. What research have you published in peer-reviewed journals?
6. What is the caloric content per cup and per kilogram?
7. Was adequacy established by feeding trial or by formulation?

Tufts adds a tell worth watching for: does the manufacturer bash other pet food companies in advertisements? And a good practical one — will they give you the level of any nutrient on request, not just the seven on the guaranteed analysis? A company that can answer that has the data.

The one thing proven to add years, and nobody sells it

Everything above is about avoiding harm and seeing through claims. There is exactly one dietary intervention proven to extend canine lifespan in a controlled trial, and it has nothing to do with what is in the bag.

Forty-eight Labrador Retrievers were followed from eight weeks old until death, in littermate pairs. One of each pair was fed twenty-five percent less than its sibling. Nothing else differed. The results, published across two decades: “Major lifetime observations included 1·8 years longer median lifespan among diet-restricted dogs, with delayed onset of late life diseases, especially osteoarthritis.”

Median lifespan was 13.0 years against 11.2 — about fifteen percent more life. And the joints:

For a working dog that is not a lifespan statistic. It is a career. Hip arthritis at six years versus twelve is the difference between a service dog retiring at seven and one still working at eleven — between one dog and two, and one training investment and two. It matters most in the large breeds that dominate service dog work, where hips are already the limiting factor.

Two honest caveats, because this site does not get to skip them for evidence it likes. The trial was forty-eight dogs of one breed at one kennel, and it was funded and conducted by Nestlé Purina. And “restricted” is a misleading word: the restricted dogs sat at a body condition score of 4.6 out of 9 and the controls at 6.7. The lean dogs were at a normal weight. The control dogs were the normal American dog. The population data agrees — across 50,787 neutered dogs in twelve breeds, overweight dogs had shorter median lifespans across the board.

How to actually do it

Use your hands, not the scale, and not the number on the bag. On the WSAVA nine-point body condition scale, 4 of 9 is ribs easily palpable with minimal fat covering and a waist easily noted from above; 5 of 9 is ribs palpable without excess fat; 7 of 9 is ribs palpable only with difficulty under heavy fat cover. Score muscle condition separately by feeling over the spine, hips, shoulders and skull — this matters enormously for an older working dog, because you can have an overweight dog with severe muscle loss, and the fat hides it.

Two reasons to trust your hands over the label. In a study of 174 owners, only 51 percent scored body condition correctly and 38 percent underestimated it. And the labels themselves run high: a Tufts analysis of eight dry adult foods found several recommending excessive calories for larger dogs, one by up to 61 percent.

This is the whole argument in one line: the only intervention proven to add years to your dog’s life is free, and that is exactly why you have never seen it advertised. There is no margin in telling you to feed less.

And it resolves everything at the top of this page. Yes, your service dog needs more than a sedentary house pet. No, that does not mean more than she can carry. The band between an underfed working dog and an overweight one is the whole game, and it is judged by hand.

Questions people ask

Does my service dog need a performance or working dog formula?

No — because no such standard exists for a food to meet. AAFCO publishes only Growth and Reproduction and Adult Maintenance profiles, so a “performance” or “working” bag is legally an adult maintenance food with an adjective. What your service dog does need is more of a good adult food: the veterinary literature places low-activity service dogs under 25 percent above active adult maintenance, and high-activity service and search-and-rescue dogs 25 to 100 percent above.

Is working dog food higher in calories?

Often yes, and that part is real — many are more calorie-dense and higher in fat, which genuinely helps deliver energy without more volume. What is not real is the implication that the food met a working dog standard. It did not, because there isn’t one. You are buying a formulation choice, not a certification.

Can I feed my non-working dog working dog food?

Yes, safely — it is an adult maintenance food. The risk is not toxicity, it is calories: a calorie-dense food fed at the same volume to a less active dog puts weight on quickly, and weight is the thing with the strongest evidence against it. If you feed it, cut the portion and check the ribs.

How much should I feed a service dog?

Start at RER = 70 × (body weight in kg)^0.75, then multiply by roughly 1.8 for ordinary public access work or 2.0 for alert and detection work. Then adjust by body condition, because Merck’s own caveat is that any individual dog may need 30 percent more or less than the calculation gives. The feeding calculator does the math and shows the band.

What is the best dog food for a service dog?

There is no single answer, and any source that gives you one is selling something. Choose a complete and balanced food from a company that employs a qualified nutritionist, owns or closely controls its plants, and tests incoming ingredients — then feed it to a lean body condition. The amount matters more than the brand.

Does expensive dog food mean better dog food?

No. In the largest recent laboratory analysis, every one of the twenty-three mass-market foods tested met AAFCO adult maintenance requirements, while 40 percent of the boutique and premium foods failed at least one. Price did not predict quality — it inverted it.

What this article is not

It is not a recommendation. No product is named as good or bad here, on purpose — the standard has to exist before the review does, or the review is just a sales page with footnotes. When we do review a food we bought, it gets measured against this page, and you can read exactly how we review things including what we spend and what we refuse.

It is also not veterinary advice. Your dog’s weight, joints, kidneys and gut are a clinical matter, and the single most useful thing in this article — feeding to a lean body condition — is worth doing with your veterinarian watching, especially in a growing large-breed puppy or a dog with an existing condition.

And if you are still deciding whether a service dog is the right path at all, that is a different question from what to feed one, and we answer it in do I qualify for a service dog.