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Blue Buffalo BLUE Natural Veterinary Diet Dry Dog Food KS Kidney Support
A feeding-trial-validated, deboned-first dry food that's cheaper per calorie than 21% of the dry foods we've priced and denser than 71% (you feed fewer cups) — $2.64 a day for your 40-lb adult dog.
THE FACTS, ONE SENTENCE — data as JSON · reference dog 40 lb · updated 2026-10-18
The evidence
The Verified Label
Every food on this site gets this exact panel — same fields, same order, sourced from the official label — so brands finally become comparable. Dots show where this food sits among all 494 dry foods we've verified.
verified 2026-10-18
Composition — dry-matter basis
why dry matter
Calories & cost — for your 40-lb adult dog
Cost per 1,000 kcal: $2.68 — cheaper than 21% of the 360 dry foods we've priced (median $1.93). Serving math uses standard veterinary energy formulas — see the formula.
Standards & ingredients
what this means
why unknown
Safety
Source: official label source (official)· price: Amazon, 2026-10-18 · anchors: 494 verified dry dog foods (360 priced) · how to read this label
The fit
For your dog, specifically
Checked for a 40-lb adult with a sensitive stomach — the same published criteria our finder uses. Change your dog above and these update.
The source material
The full ingredient list
Every flag above is computed from this list. Why order is by pre-cooking weight, and how splitting bends it →
Deboned Chicken, Brown Rice, Oatmeal, Potatoes, Potato Starch, Chicken Fat (preserved with Mixed Tocopherols), Dried Egg Product, Flaxseed (source of Omega 3 and 6 Fatty Acids), Natural Flavor, Powdered Cellulose, Potato Protein, Fish Oil (source of DHA-Docosahexaenoic Acid), Barley, Chicken Meal, Potassium Citrate, Calcium Carbonate, Dried Chicory Root, Dried Tomato Pomace, Direct Dehydrated Alfalfa Pellets, Taurine, Dried Kelp, Alfalfa Nutrient Concentrate, Turmeric, DL-Methionine, Choline Chloride, Sweet Potatoes, Carrots, Vitamin E Supplement, L-Threonine, Zinc Amino Acid Chelate, Salt, preserved with Mixed Tocopherols, Potassium Chloride, Iron Amino Acid Chelate, L-Carnitine, L-Tryptophan, Vegetable Juice for color, Blueberries, Cranberries, Barley Grass, Parsley, Yucca Schidigera Extract, Copper Amino Acid Chelate, Manganese Amino Acid Chelate, Niacin (Vitamin B3), Calcium Pantothenate (Vitamin B5), Biotin (Vitamin B7), L-Ascorbyl-2-Polyphosphate (Vitamin C), L-Lysine, Vitamin A Supplement, Zinc Sulfate, Ferrous Sulfate, Thiamine Mononitrate (Vitamin B1), Riboflavin (Vitamin B2), Vitamin D3 Supplement, Vitamin B12 Supplement, Pyridoxine Hydrochloride (Vitamin B6), Calcium Iodate, Dried Yeast, Dried Enterococcus faecium fermentation product, Dried Lactobacillus acidophilus fermentation product, Dried Aspergillus niger fermentation extract, Copper Sulfate, Dried Trichoderma longibrachiatum fermentation extract, Dried Bacillus subtilis fermentation extract, Folic Acid (Vitamin B9), Manganese Sulfate, Sodium Selenite, Oil of Rosemary
13 ingredients in this list are ones we hold sourced evidence on , and 1 of them is genuinely contested rather than merely unpopular online.
- Potato · ingredient 4ContestedA starchy tuber used as the carbohydrate base in many grain-free foods (it is a vegetable, not a cereal grain). The FDA's open 2018 investigation into diet-associated canine DCM listed potatoes 'in various forms' as main ingredients of interest alongside pulses such as peas and lentils.
- Named Muscle Meat (e.g., Deboned Chicken, Beef, Salmon) · ingredient 1Well supportedA named fresh muscle meat identifies both the species and that it is clean flesh (AAFCO defines 'meat' as the clean flesh of a specified slaughtered mammal, and 'poultry' as clean flesh and skin). Naming the species is what lets an owner verify a protein for allergy avoidance.
- Mixed tocopherols (natural vitamin E) · ingredient 6Well supportedA blend of vitamin E forms (alpha-, beta-, gamma-, delta-tocopherol) used as a natural-source antioxidant to slow fat rancidity, commonly chosen as an alternative to synthetic preservatives. EFSA concluded that tocopherol-rich extracts are safe for all animal species and the consumer and are efficacious antioxidants in feed.
- Fish oil (EPA + DHA omega-3) · ingredient 12Well supportedMarine-source omega-3 fatty acids (EPA and DHA) from fish oil. A randomized, double-blinded controlled trial (Roush 2010) found improved weight-bearing in dogs with osteoarthritis, and a 2022 meta-analysis identified clear clinical analgesic efficacy for omega-3-enriched diets and supplements.
- Named Meat/Poultry Meal (e.g., Chicken Meal, Lamb Meal) · ingredient 14Well supportedA rendered, water- and fat-reduced concentrate from a named species (AAFCO, e.g., 'chicken meal'). Because most moisture is removed it is a dense protein source (poultry meals commonly around 57-69% crude protein) and it names the species for allergy avoidance.
- Rosemary extract · ingredient 69Well supportedA plant-derived natural antioxidant (active compounds carnosic acid and carnosol) used to slow fat oxidation, frequently chosen as an alternative to synthetic preservatives. It is an authorized food antioxidant in the EU (E 392); JECFA established a temporary acceptable daily intake for rosemary extract expressed as carnosic acid plus carnosol.
The maker
Who makes this — and how they back it up
The five questions the WSAVA nutrition guidelines tell you to ask a pet-food company. Every answer is sourced or marked as an undisclosed gap — never guessed. This is the "is it made competently?" axis that star-rating sites skip.
Same source also states: 'Blue Buffalo sources and produces everything from its own facilities or from partners across the United States.' Indicates a mix of own facilities plus third-party co-manufacturers.
source →Blue Buffalo's professional site states doctorate-level animal nutritionists on staff. Gaylord, DVM, DACVIM (Nutrition) — a board-certified veterinary nutritionist — and Matt Panasevich, PhD, work at Blue Buffalo.
source →10 of 312 labels we checked carry an AAFCO feeding-trial substantiation statement.
source →covers: pathogen/bacteriology (microbiology), finished-product nutrient analysis, shelf-life. Blue Buffalo veterinary site. bluebuffalo.com/why-choose-blue/quality-and-safety/ also describes a 6-point check incl. supplier ingredient testing per shipment, not quoted.
source →15 PubMed papers (animal/pet filtered) list Blue Buffalo Co. (General Mills) in an author address; we checked 15 and 13 really name the company. A floor, not a total.
source →Full company scorecard, sources, and every SKU we've verified for this brand: Blue Buffalo brand page →