Evergreen monthly benchmark — Jul 14
Dog Food
Research by Robert Hu · Published by RecoScope ·
- Usable answers
- 12/12
- Models
- 4
- Prompt types
- 3
Included: ChatGPT, Claude, Gemini, Perplexity
Report history · Jul 14 selected · 10 snapshots
Key takeaway
For a Labrador owner, AI routes to Purina Pro Plan, Royal Canin, and Hills Science Diet in every engine that names brands, on institutional-credibility grounds rather than ingredient quality - and every engine actively warns against the boutique grain-free positioning that most challenger brands are built on. Claude declined to name any brand at all on the discovery prompt, the first zero-brand response recorded. Diamond Naturals is the one challenger with genuine cross-model presence, and it wins on the value prompt in all four engines.
Mention Frequency Trend
Brands ordered by mention count in each run. Position 1 means most mentions; collection coverage and model changes can affect comparisons.
Scroll sideways to see all dates and labels.
Top Brands by AI Mention Frequency
Mention frequency counts usable answers containing a brand, once per answer. Unranked and critical mentions count as visibility. Recommendation ranks are shown separately below.
Most Mentioned = most answers mentioning a brandTied #1 = tied for most mentionsTop 3 across models = a recorded top-three rank in multiple comparisonsRanked #1 in [Model] = first in that comparative answerUnranked mentions = visibility without an inferred rank
1Hills Science DietMost Mentioned8/12
2Purina Pro PlanTop 3 across models7/12
2Royal CaninTop 3 across models7/12
4Diamond Naturals4/12
4Iams4/12
Cross-Agent Comparison
Recorded ranks from the comparative prompt (Prompt 3). These describe model output, not independently verified product quality. Historical parsing conventions may differ.
4/4 models with recorded ranks
| Agent | #1 | #2 | #3 |
|---|---|---|---|
| ChatGPT | Purina Pro Plan | Hills Science Diet | Royal Canin |
| Claude | Purina Pro Plan | Royal Canin | Hills Science Diet |
| Gemini | Royal Canin | Purina Pro Plan | Hills Science Diet |
| Perplexity | Royal Canin | Advance | Wellness |
What This Means
- Purina Pro Plan takes the aggregate #1 for three of the four engines (ChatGPT, Claude, and Perplexity), with Gemini the lone holdout crowning Royal Canin on breed-specific grounds.
- The run's sharpest finding is a volume-versus-authority inversion the table makes explicit: Hills Science Diet is the overall mention leader at eight mentions yet sits outside every single engine's top 3 - mentioned constantly, top-picked never, the strongest example of that pattern in the dataset.
- All four engines converge on the same institutional-credibility framework (WSAVA criteria, feeding trials, veterinary nutritionists on staff) and all warn against grain-free pulse-heavy diets on DCM grounds.
- Below that they diverge in tail and posture.
- ChatGPT is the broadest commerce surface, price-tagging every SKU and uniquely surfacing Nutro, Nutrish, WholeHearted, and Pure Balance.
- Claude is the most safety-conservative: its discovery prompt refused to name any brand at all, and it uniquely surfaces the Kirkland/Costco budget sleeper on breeder-forum evidence.
- Gemini is the most breed-specific in its reasoning (kibble shape, eating pace, fat-versus-protein specifics) and uniquely surfaces JustFoodForDogs.
- Perplexity is the most citation-driven (Dog Food Advisor 2026) and uniquely surfaces Canidae, Advance, and Black Hawk.
- Diamond Naturals is the one challenger with genuine cross-model reach, taking a top-3 aggregate slot for Claude and Perplexity.
Findings and Limitations
- The category is locked around three legacy veterinary-credentialed brands, and the barrier is institutional rather than product-level: the disqualifying criteria every engine applies (full-time veterinary nutritionist on staff, published feeding trials, owned manufacturing) are structurally unavailable to most DTC and boutique brands regardless of ingredient quality.
- That makes dog food the hardest category tracked for a challenger to enter.
- Fresh and DTC brands are nearly absent - The Farmer's Dog, Ollie, Nom Nom, and Spot and Tango do not surface in any engine despite heavy marketing spend, and JustFoodForDogs appears once.
- Grain-free positioning is now actively penalized rather than rewarded.
- Blue Buffalo, a major retail brand, surfaces only once and only inside a grouped mention.
Recurring themes in the answers
- The brands AI favors share large-breed adult formulation, added glucosamine and chondroitin for the Labrador dysplasia risk, calorie control for a breed every engine flags as genetically obesity-prone, AAFCO adult-maintenance adequacy statements, and - most importantly - institutional nutrition credibility: employing full-time veterinary nutritionists, running feeding trials, and owning manufacturing rather than co-packing (the WSAVA evaluation criteria, cited unprompted by three of four engines).
Inspect the captured answers
Saved response text is model output. Product and health claims are unverified. Tables and cards may be transcribed as text; source labels can remain. Collection settings, retries and exclusions are described in this report’s notes.
ChatGPT · Prompt 1Usable answer
Best dog food, 35yo dog mom, 4yo Labrador Retriever
ChatGPT P1: Top rec Purina Pro Plan Adult Large Breed Chicken and Rice ($99.98) - formulated for adults over 50 lbs, glucosamine and EPA for joints, manufacturer with feeding research and quality control per WSAVA evaluation criteria. Alternatives: 1 Purina Pro Plan Sensitive Skin and Stomach Large Breed ($79.99, salmon and rice, for loose stool/itchiness). 2 Royal Canin Labrador Retriever Adult ($79.99, breed-specific, donut kibble slows fast eaters, expensive per pound). 3 Hills Science Diet Large Breed ($89.99 lamb / $96.99 chicken, conservative dependable choice). 4 Eukanuba Adult Large Breed ($41.99, high-protein for active Labs). 5 Iams ProActive Health Large Breed ($29.97, value pick). Avoid grain-free/pulse-heavy boutique diets - FDA DCM reports involved peas and lentils high in formulation. Look for AAFCO adult maintenance statement.
Claude · Prompt 1Usable answer
Best dog food, 35yo dog mom, 4yo Labrador Retriever
Claude P1: NAMED ZERO BRANDS. Explicitly declined to give a best-brands list: I would rather not just hand you a best list, since quality, recalls, and reformulations change over time. Instead gave evaluation criteria: adult maintenance life stage formula (not puppy or senior), weight management (Labs prone to obesity, moderate fat, good protein-to-calorie ratio), joint support (glucosamine, chondroitin, omega-3 from fish oil for hip/elbow dysplasia risk), protein quality (named animal protein first, not meat by-products). Advised confirming AAFCO adult maintenance adequacy, looking for brands employing a full-time veterinary nutritionist and doing their own manufacturing rather than co-packing, and checking WSAVA guidelines questions. Emphasized portion control and body-condition scoring over brand switching. Offered to build a comparison if wanted.
Gemini · Prompt 1Usable answer
Best dog food, 35yo dog mom, 4yo Labrador Retriever
Gemini P1: Three breed-specific factors - obesity prevention (Labs genetically food-obsessed), joint support (glucosamine and chondroitin), and heart/nutritional safety (feed WSAVA-guideline brands employing full-time veterinary nutritionists with feeding trials). Vet-recommended brands for Labs: 1 Royal Canin Breed Health Nutrition Labrador Retriever Adult (literally custom-designed for Labs, donut-shaped kibble forces fast-eating Labs to chew, lower calorie density, targeted joint support). 2 Purina Pro Plan Adult Large Breed Chicken and Rice or Salmon and Rice (highly digestible, massive clinical research, loved by canine athletes, glucosamine and EPA; Sensitive Skin and Stomach version for itchy skin). 3 Hills Science Diet Adult Large Breed Chicken and Barley (precise science-backed biology, strict quality control, natural glucosamine and chondroitin). Grain-free warning: veterinary cardiologists found a strong link between boutique grain-free diets heavy in peas, lentils, chickpeas and DCM.
Frequently Asked Questions
Which dog food brands appear most often?▾
Hills Science Diet appeared in 8 of 12 answers. This snapshot includes 12 usable answers from ChatGPT, Claude, Gemini, Perplexity. Mentions include comparisons and criticism.
Which brands rank first in the dog food comparison answers?▾
ChatGPT: Purina Pro Plan; Claude: Purina Pro Plan; Gemini: Royal Canin; Perplexity: Royal Canin
Why do models give different dog food answers?▾
Purina Pro Plan takes the aggregate #1 for three of the four engines (ChatGPT, Claude, and Perplexity), with Gemini the lone holdout crowning Royal Canin on breed-specific grounds. The run's sharpest finding is a volume-versus-authority inversion the table makes explicit: Hills Science Diet is the overall mention leader at eight mentions yet sits outside every single engine's top 3 - mentioned constantly, top-picked never, the strongest example of that pattern in the dataset. All four engines converge on the same institutional-credibility framework (WSAVA criteria, feeding trials, veterinary nutritionists on staff) and all warn against grain-free pulse-heavy diets on DCM grounds. Below that they diverge in tail and posture. ChatGPT is the broadest commerce surface, price-tagging every SKU and uniquely surfacing Nutro, Nutrish, WholeHearted, and Pure Balance. Claude is the most safety-conservative: its discovery prompt refused to name any brand at all, and it uniquely surfaces the Kirkland/Costco budget sleeper on breeder-forum evidence. Gemini is the most breed-specific in its reasoning (kibble shape, eating pace, fat-versus-protein specifics) and uniquely surfaces JustFoodForDogs. Perplexity is the most citation-driven (Dog Food Advisor 2026) and uniquely surfaces Canidae, Advance, and Black Hawk. Diamond Naturals is the one challenger with genuine cross-model reach, taking a top-3 aggregate slot for Claude and Perplexity.