The concerns we refuse to checkmark

What people search: “glucosamine dog food”“joint supplement dog food”“best food for hip dysplasia”“large breed joint support kibble”

A bag can print "with glucosamine & chondroitin" on the front without disclosing the dose that ends up in a cup of food — guaranteed analysis has no required field for it, so most labels don't even attempt a number. Tufts' veterinary nutrition service put it plainly: the doses studied for benefit in supplement form were "considerably higher than what is found in veterinary or over-the-counter diets" — so a bag naming the ingredient tells you nothing about whether the amount inside is anywhere near a therapeutic dose. There is no field on any label — ours included — that can tell you whether your dog is getting a therapeutic amount from food alone.

Source: Tufts Petfoodology — "Can Joint Diets Help My Dog's Pain?"

What people search: “kidney friendly dog food”“low phosphorus dog food”“renal diet dog food over the counter”“best food for stage 2 CKD dog”

The one nutrient that matters most for kidney disease — phosphorus — isn't a required guaranteed-analysis field. It's disclosed on only a small minority of the labels in our own dataset (see the calcium/phosphorus row on any product page — most read "not disclosed"). A real renal diet is titrated per patient against bloodwork (BUN, creatinine, SDMA, phosphorus) that no label can see. Tufts vet nutrition: dogs eating a properly formulated renal diet can live roughly twice as long as those left on a typical maintenance food — but "properly formulated" there means a vet-prescribed therapeutic diet, not a retail bag marketed as "sensitive kidney support."

Source: Tufts Petfoodology — "My pet has kidney disease – what kind of diet should I feed?"

What people search: “grain free DCM dog food list”“taurine dog food heart”“is this food linked to dilated cardiomyopathy”“foods to avoid DCM”

Taurine and its amino-acid precursors aren't standard guaranteed-analysis fields, so they're undisclosed on nearly every label we track. The FDA's own multi-year investigation (2018–2023) into diet-associated DCM tested foods linked to reported cases and found taurine levels comparable to foods with no reported cases; the agency formally stated the reports "do not supply sufficient data to establish a causal relationship" with any single ingredient category, and it has stopped publishing brand lists pending new science. There's no clean, checkable rule here — not "avoid legumes," not "avoid grain-free" — that current evidence actually supports, which is exactly why we won't manufacture a checkmark out of an unsettled, patient-specific question.

Source: FDA — "Investigation into Potential Link between Certain Diets and Canine Dilated Cardiomyopathy"

What people search: “best dry dog food for teeth”“dental dog food vs brushing”“does kibble reduce tartar”“dental chews vs dental diet”

Only a specific, tested list of diets carries the Veterinary Oral Health Council (VOHC) seal for verified plaque/tartar reduction — and that's a product certification, not a guaranteed-analysis number, so it can't be computed from anything on a nutrition panel. Ordinary kibble's crunch doesn't meaningfully reduce plaque on its own. Tufts vet nutrition: unless you're feeding a food specifically formulated and tested for dental health, any tartar benefit from dry food alone is subtle — and brushing remains the single most effective thing you can do for your dog's teeth, independent of what's in the bowl.

Source: Tufts Petfoodology — "What are the best foods and treats for my pet's dental health?"

What people search: “dog food allergy test”“hypoallergenic dog food”“limited ingredient diet for allergies”“chicken allergy dog symptoms”

We can tell you whether a named protein is absent from an ingredient list — that's the avoidance check on every product page, and it's deliberately framed as avoidance, never diagnosis. We can't tell you whether your dog is actually allergic to it. A real diagnosis needs a supervised elimination trial, and peer-reviewed testing keeps finding that over-the-counter "limited ingredient" and "novel protein" diets are frequently cross-contaminated with undeclared proteins during manufacturing — a PCR study of limited-antigen wet diets found undeclared animal protein in 6 of the 11 diets tested (54.5%), and a systematic review of pet-food label-accuracy studies found unlisted ingredients in 0% to 83% of tested diets (median 45%) across the studies it appraised. The retail product people reach for to self-diagnose an allergy is often unreliable for that exact job.

Source: Tufts Petfoodology — "Think Your Pet has a Food Allergy? Eliminating Mistakes in Elimination Diet Trials"

What people search: “best senior dog food”“senior dog food vs adult food”“when to switch to senior dog food”

AAFCO has never published an official senior nutrient profile — only growth and adult-maintenance. That means anything labeled "senior," "mature," or "7+" is, by law, formulated to the exact same adult-maintenance minimums as every other adult food; how it actually differs (calories, fiber, joint additives, protein level) is entirely up to the manufacturer, and manufacturers don't agree. Tufts vet nutrition's own review of senior diets found calorie density ranging from 246 to 408 kcal per cup among foods all marketed as "senior" — a huge spread for a label word with no regulatory floor. We show AAFCO life stage as a plain fact on every product page (growth / adult maintenance / all life stages) and never imply "senior" is itself a checkable nutrient standard, because AAFCO doesn't have one.

Source: Tufts Petfoodology — "When Should I Switch My Pet to a Senior Diet?"

What people search: “holistic dog food meaning”“immune support dog food”“anti-cancer dog food”“antioxidant dog food benefits”

"Holistic" has no AAFCO definition and no legal consequence for using it on a bag. WSAVA's own global nutrition guidelines call out "holistic" and "premium" by name as terms "of little practical value" for judging a food nutritionally. "Immune support," "antioxidant-rich," and cancer-prevention framing sit on top of the exact same guaranteed-analysis panel every other food carries — there's no separate immune or oncology nutrient disclosure a label could make even if a brand wanted to. We publish only the fields AAFCO actually requires (protein/fat/fiber/moisture, calories, ingredient order, AAFCO statement type) and never invent a checkmark to match a marketing word.

Source: WSAVA Global Nutrition Committee — Guidelines on Selecting Pet Foods