Home / Dog food / Kirkland Signature / Kirkland Signature Mature Formula Chicken, Rice and Egg Dog Food

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Kirkland Signature Mature Formula Chicken, Rice and Egg Dog Food

Dry food · senior dogs

A formulated-to-meet, chicken-first dry food that's denser than 12% (you feed fewer cups). Cost-per-day isn't available yet — this SKU isn't price-matched.

THE FACTS, ONE SENTENCE — data as JSON · reference dog 40 lb · updated 2026-07-11

Tell us about your dogevery number on this page updates live ↓
40 lb
For a 40-lb adult: 3 cupsper day not pricedper day 40 daysbag lasts passes 2 fit checks ↓

Joint, kidney, dental or heart concerns? Labels can't honestly answer those — that's vet territory. Why we don't checkmark them →

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 LabelThe standardized pet-food panel
VPFD № KIRKLA
verified 2026-07-11

Composition — dry-matter basis

why dry matter
Moisture hides the real recipe: kibble is ~10% water, canned food ~78%. Removing water puts every food on one scale, so these are the only nutrition numbers that can be compared across foods. As-fed label values shown small.
Protein 30%label: 27% min typical — the median dry food is 30%
Fat 13.3%label: 12% min lower than 82% of dry foods
Fiber 3.3%label: 3% max lower than 98% of dry foods
Est. carbohydrates ash not disclosed → 8% assumed, so this is an estimate ≈44.4%computed anchor available once more brands disclose ash
Calcium / Phosphorus extended guarantees: Ca 0.9% · P 0.7% · Ω-3 0.4% 1.29 : 1ratio, as fed within the AAFCO adult range (1:1 – 2:1)

Calories & cost — for your 40-lb adult dog

Calorie density 330 kcal/cup3529 kcal/kg lighter than 88% of dry foods (median 388) — you feed more cups
Daily serving3 cups
Cost per day—
25-lb bag lasts40 days

Cost per 1,000 kcal not available yet — this SKU isn't price-matched to a current retail listing. Serving math uses standard veterinary energy formulas — see the formula.

Standards & ingredients

AAFCO statement
what this means
Two kinds of AAFCO claims exist. Most foods are only "formulated to meet" nutrient profiles — a paper calculation. A smaller set carry the stronger claim: fed to real dogs in AAFCO-procedure trials ("Animal feeding tests using AAFCO procedures substantiate…").
 Formulated to meet · maintenance
First five ingredients (by pre-cooking weight)Chicken · chicken meal · whole grain brown rice · egg product · oatmeal
Named animal protein first; named meals onlyYes
Legumes in first 10 (FDA DCM inquiry)None
BHA / BHT preservativesNone on label
Carrageenan (thickener)None
Ethoxyquin
why unknown
When a fish-meal supplier adds ethoxyquin, U.S. rules don't require it on the finished label — so no label can prove its absence for recipes containing fish meal. We report this as a gap rather than guessing.
 Can't be determined from label

Safety

FDA recalls — Kirkland Signature, since 2023None on record
ManufacturerNot confirmed from label
Label transparency 11 of 15 standard fields
Green = verified favorable · amber = gap in the record · red = verified unfavorable · gray = not disclosed / neutral fact.
Source: official label source (secondary) · 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.

✓
Validated for adult dogsAAFCO statement covers adult maintenance.
✓
Passes our sensitive-stomach checksNamed animal protein first, and no unnamed by-products in the ingredient list.
·
Contains chickenNot selected as a concern for your dog — shown here for reference.

The source material

The full ingredient list

Every flag on the Verified Label is computed from this list. Ingredients are ordered by pre-cooking weight — the first five carry the most information.

Chicken, chicken meal, whole grain brown rice, egg product, oatmeal, cracked pearled barley, ground white rice, chicken fat (preserved with mixed tocopherols), dried beet pulp, potato, natural chicken flavor, flaxseed, millet, fish meal, potassium chloride, choline chloride, glucosamine hydrochloride, chondroitin sulfate, carrot, pea, dried kelp, apple, cranberry, rosemary extract, parsley flakes, dried chicory root, dried lactobacillus plantarum fermentation product, dried bacillus subtilis fermentation product, dried lactobacillus acidophilus fermentation product, dried enterococcus faecium fermentation product, dried bifidobacterium animalis fermentation product, vitamin E supplement, iron proteinate, zinc proteinate, copper proteinate, ferrous sulfate, zinc sulfate, manganese sulfate, copper sulfate, potassium iodide, thiamine mononitrate, manganese proteinate, ascorbic acid, vitamin A supplement, l-carnitine, biotin, niacin, calcium pantothenate, sodium selenite, pyridoxine hydrochloride, vitamin B12 supplement, riboflavin, vitamin D3 supplement, folic acid

Wet ingredients like fresh chicken shrink once cooked — which is why named meals appearing high on the list matter: they keep meaningful animal protein after moisture is removed.

Nutritional twins

Priced close matches

This food has no verified price yet — these are the closest label matches that do.

Nutro Natural Choice Senior Dog Food, Lamb & Brown Rice
28.9% protein (DM)$4.42 / 1,000 kcal
Royal Canin Dachshund Adult Dry Dog Food
28.9% protein (DM)$3.82 / 1,000 kcal
Purina Pro Plan Large Breed Chicken & Rice Formula Dog Food
29.5% protein (DM)$1.75 / 1,000 kcal

Label-composition matches only: same species, form, and growth stage; same primary protein where both are known; grain-free preserved; protein within 4 points and fat within 4 points, and estimated carbs within 8 points, on a dry-matter basis. Not a medical or quality recommendation.

The maker

Who makes this — and how they back it up

The four 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.

Owns its manufacturing Co-packed

Private label: Costco owns the label but no plants; Kirkland Signature dog food is co-manufactured by Diamond Pet Foods (corroborated by dogfoodadvisor.com, which states 'Kirkland Signature pet food is made by Diamond Pet Foods').

source →
Employs a qualified nutritionist Undisclosed

No named board-certified veterinary nutritionist or PhD nutritionist disclosed for Kirkland or its maker Diamond in fetched sources. Null.

source →
AAFCO feeding trials Undisclosed

No feeding-trial AAFCO statement found on the 3 labels we’ve verified for this brand, and no company-wide claim was found either. Most pet foods are only "formulated to meet" AAFCO profiles (a paper calculation) rather than fed to real animals in trials — this is common, not necessarily a red flag.

Peer-reviewed research None found

A reproducible PubMed search (author-affiliation field, animal/pet-domain filtered) returns zero indexed papers for this brand name. Not proof no research exists — only that none is PubMed-indexed under this exact name.

source →
Parent company Costco Wholesale Corporation ↗ FDA recalls on record 1 on record

Full company scorecard, sources, and every SKU we've verified for this brand: Kirkland Signature brand page →