Merrick · Dry cat food

Purrfect Bistro Grain-Free Chicken & Sweet Potato

Item: Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato
Rating: 7.6
Author: PetScored

A high-protein grain-free recipe (38% crude protein) with chicken and chicken meal first and declared taurine. Cassava root flour, potato protein, and pea fractions carry the carbohydrate base, and beef fat adds a second common feline trigger alongside chicken.

Last reviewed May 2026AdultKibblePartially verified

By the PetScored Editorial Team. Every sub-score below links to the sources and rules behind it - see the full trail under the score.

Kibble (dry): well-established. The most-studied format. Deepest evidence base, lowest cost per calorie. The evidence on this format ›

Strengths

Nutrition Fit 9.0 / 10AAFCO adequacy clears the rubric and dry-matter protein and fat land in the bands we expect.
Low sensitivity risk 9.0 / 10Few of the most-named adverse-reaction trigger ingredients high on the label.
Crude protein 38%High-protein bag on the guaranteed analysis panel.

Watch-outs

Common triggers on the labelSkip if your dog avoids chicken, beef, egg. We surface this regardless of sub-score.
Partially verified source confidenceSome label or pricing fields rely on retailer-mediated capture rather than the manufacturer source. See evidence notes below.
Value 6.0 / 10Value is reconstructed from package size, price, kcal density, category median, and quality caps.

Data status

Partially verified

Some primary-source fields are verified; unresolved fields remain visible.

Last reviewed: May 2026

Launch readiness

Source-capture hold.

This page is missing the packet or source record needed for beta QA.

Attach product source and verification packet records before promotion.

Lane: Source capture
Packet: missing
Product source: missing

Brand Trust scoring

Brand Trust source capture is in progress.

Captured Brand Trust signals are shown for auditability, but they do not affect the product score until the record is verified.

Record status: partially verified
Score path: Seed score still in use
Unknown signals: 9
Conflicts: 0
Brand sources: 4

Buyer read

What should you take away?

Dog food rubric

Looks promising, with a few checks still worth making.

For Purrfect Bistro Grain-Free Chicken & Sweet Potato, the main watch-outs are: the estimated cost per calorie is high compared with similar foods. This is an evidence read, not a medical recommendation.

9.0

Nutrition FitAAFCO fit, calories, and dry matter protein/fat ranges.

6.5

Brand TrustWSAVA-style signals, recall mapping, and source confidence.

7.0

Ingredient ClarityNamed sources and label specificity.

9.0

Sensitivity RiskPopulation-level common allergen exposure.

6.0

ValueEstimated price per 1,000 kcal within category.

vs. Dry cat food

How this scorecard reads against its category.

Solid bar is this product. Hollow tick mark is the average across 32 peers in the same category. Same rubric for both, no weighting tricks.

Nutrition Fit9.0near avg

Brand Trust6.5near avg

Ingredient Clarity7.0+0.8 vs avg

Sensitivity Risk9.0+0.3 vs avg

Value6.0+1.1 vs avg

Score math

How PetScored got there.

Expand to see the rule-by-rule trail. Useful for checking the rubric; not required to make a buying decision.

Show the trail▾

Nutrition Fit9.0

30% of total score

8 scoring rule(s)0 context item(s)

Nutrition Fit is reconstructed from deterministic dog-food v1 rules using the currently available fixture fields.

AAFCO statement matches declared life stageA verified AAFCO adequacy statement earns points only when it matches the declared life stage.

Merrick Purrfect Bistro Grain-Free Real Chicken + Sweet Potato Recipe is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for the maintenance of adult cats.

+3.0A

Feeding trials substantiate adequacyFeeding-trial language receives additional credit because it is stronger evidence than formulated-to-meet language.

Merrick Purrfect Bistro Grain-Free Real Chicken + Sweet Potato Recipe is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for the maintenance of adult cats.

0.0A

Protein dry matter basis in rangeProtein is compared on dry matter basis against the cat adult maintenance range of 30-50%.

43.2%+2.0A

Fat dry matter basis in rangeFat is compared on dry matter basis against the cat adult maintenance range of 9-25%.

18.2%+2.0A

Calcium and phosphorus listedThis can earn credit once the nutrition panel stores calcium and phosphorus fields from a verified source.

not captured in v0 fixture0.0B

Calorie statement presentA calorie statement is needed for value, feeding-cost, and cross-format comparison work.

459 kcal/cup+1.0A

Large-breed puppy statementThis rule is not applicable unless the product is marketed for large-breed puppies.

not applicable0.0A

Taurine declared on label (cat)Cat foods must declare taurine on the GA panel or in the ingredient list. AAFCO requires a minimum 1,000 mg/kg DMB for adult cat diets. PetScored scores the label declaration; failure to declare on adult or all-life-stages diets triggers a hard-fail floor at 4.0.

declared+1.0A

Brand Trust6.5

25% of total score

1 scoring rule(s)14 context item(s)seed in use

Brand Trust is still using the seed subscore while source signals are captured, reviewed, or blocked by conflict.

Brand Trust signal record pending verificationBrand Trust requires source-backed evidence for nutrition staff, manufacturing, recalls, research, and transparency. The seed score remains visible until those signals are verified.

partially_verified; 4 source(s) capturedcontextSeed

Named qualified nutritionistA publicly named qualified nutritionist earns Brand Trust credit when the source record verifies it. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextA

Owns primary manufacturing facilitiesOwnership or direct operation of primary manufacturing earns credit when verified from brand or facility sources. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextA

Current feeding-trial evidenceCurrent AAFCO feeding-trial evidence earns Brand Trust credit when it is tied to the product or line. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextA

Publishes peer-reviewed researchPeer-reviewed product or nutrition research earns credit when verified. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextA

Complete nutrient analysis availableComplete nutrient analysis availability earns credit when source-backed. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextA

No FDA recall in past five yearsRecall credit requires verified matching against FDA recall/enforcement records.

verified_truecontextA

No FDA Class I recall everClass I recall history must be source-matched before credit is awarded. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextA

Country-of-origin sourcing publishedPublished sourcing information earns partial Brand Trust credit when verified. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextB

Same ownership for 10+ yearsOwnership stability earns limited heuristic credit when verified.

verified_truecontextC

Active FDA warning letterActive FDA warning letters reduce Brand Trust when verified and relevant. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextA

Cannot identify qualified nutritionistIf research cannot identify a qualified nutritionist anywhere, Brand Trust is reduced. This signal is unknown and is shown as research debt, not treated as false.

unknowncontextA

Unknown Brand Trust signalsUnknown Brand Trust signals are shown as research debt. They do not change the score until source verification is complete.

9 unresolved signal(s)contextSeed

Brand Trust seed subscorePrototype score imported from the seed fixture. This keeps the public page auditable while verified rule events replace seed values.

6.5 / 10+6.5Seed

Source confidence visibleConfidence is shown beside the score so prototype, single-source, verified, stale, and conflict records are not treated the same.

Partially verifiedcontextSeed

Ingredient Clarity7.0

15% of total score

8 scoring rule(s)0 context item(s)

Ingredient Clarity is reconstructed from named-source and label-specificity rules.

Animal protein sources named in top 10Named species such as chicken meal or salmon count as clearer than generic terms such as meat meal or poultry by-product meal.

chicken | chicken meal | beef fat (preserved with mixed tocopherols) | dried egg product+3.0B

Fat sources named in top 10Named fats, such as chicken fat or salmon oil, are clearer than generic animal fat.

beef fat (preserved with mixed tocopherols)+2.0B

Grain sources are specificSpecific grains such as rice, barley, oatmeal, or sorghum earn clarity credit. Generic grain terms do not.

no grain source detected+1.0B

Preservatives explicitly namedExplicit preservative language earns clarity credit because the label tells readers what is preserving the fat or formula.

beef fat (preserved with mixed tocopherols)+1.0A

Country of manufacture statedThis can earn credit once the product source record stores a verified made-in or country-of-manufacture statement.

not captured in v0 fixture0.0C

Manufacturer identifiableThis can earn credit once the source record identifies the manufacturer from a verified product page or label.

not captured in v0 fixture0.0C

Co-packer or facility disclosedThis can earn credit once the product or brand source record publicly discloses the facility or co-packer.

not captured in v0 fixture0.0C

Ingredient splitting high on labelRelated starch or pulse ingredients high on the label are flagged for transparency. This is not treated as proof of harm.

pea/pulse: pea starch | pea protein0.0C

Sensitivity Risk9.0

15% of total score

9 scoring rule(s)0 context item(s)

Sensitivity Risk is reconstructed from common allergen exposure patterns in the ingredient list.

Sensitivity baselineSensitivity Risk starts at 10 and adjusts for common exposure patterns. It is not a prediction for an individual dog.

10 / 10 before ingredient exposure adjustments+10.0A

Beef or beef-derived ingredient in top 5Beef exposure in the top five ingredients lowers the score because beef is commonly reported in canine food-reaction studies.

chicken | chicken meal | cassava root flour | potato protein | dried yeast0.0A

Dairy ingredient anywhereDairy exposure is counted anywhere on the label because even lower-position ingredients may matter for sensitive dogs.

chicken | chicken meal | cassava root flour | potato protein | dried yeast | beef fat (preserved with mixed tocopherols) | canola meal | dried egg product | pea starch | pea protein | sweet potatoes | natural flavor | dried chicory root | phosphoric acid | potassium chloride | flaxseed | sodium bisulfate | calcium carbonate | salt | choline chloride | taurine | vitamins | minerals

0.0A

Chicken or chicken-derived ingredient in top 5Chicken exposure in the top five ingredients lowers the score as a population-level sensitivity flag.

chicken | chicken meal | cassava root flour | potato protein | dried yeast-1.0A

Wheat or wheat gluten in top 5Wheat exposure in the top five ingredients is flagged without implying the food is unsafe.

chicken | chicken meal | cassava root flour | potato protein | dried yeast0.0A

Lamb in top 5Lamb receives a smaller exposure adjustment under the current dog-food rubric.

chicken | chicken meal | cassava root flour | potato protein | dried yeast0.0A

Multiple common sensitivity ingredients in top 5Multiple common exposure families high in the ingredient list receive an additional small adjustment.

1 of beef, dairy, chicken, wheat detected0.0B

Hydrolyzed protein primary dietHydrolyzed-protein diets can receive credit when hydrolyzed protein is a primary ingredient.

not detected0.0A

Single novel protein sourceA single novel animal protein can receive credit, but marketing claims alone do not count.

not detected0.0B

Value6.0

15% of total score

3 scoring rule(s)2 context item(s)

Value is reconstructed from package size, price, kcal density, category median, and quality caps.

Package weight parsedPackage weight is parsed from the product fixture so price can be normalized before scoring.

5.44 kgcontextC

Cost per 1,000 kcal calculatedValue uses calories rather than package price alone, because calorie density changes how long a bag lasts.

USD 2.15contextC

Category relative price bandThe base Value score comes from cost per 1,000 kcal relative to the product category median.

107% of Boutique premium dry cat median+6.0C

Nutrition Fit value capA low Nutrition Fit score caps Value so a cheap food is not over-rewarded when core nutrition evidence is weak.

Nutrition Fit 9.00.0C

Brand Trust value capA low Brand Trust score caps Value so price does not overpower weak manufacturer/source signals.

Brand Trust 6.50.0C

Ingredients

Parsed label

Chicken, Chicken Meal, Cassava Root Flour, Potato Protein, Dried Yeast, Beef Fat (Preserved with Mixed Tocopherols), Canola Meal, Dried Egg Product, Pea Starch, Pea Protein, Sweet Potatoes, Natural Flavor, Dried Chicory Root, Phosphoric Acid, Potassium Chloride, Flaxseed, Sodium Bisulfate, Calcium Carbonate, Salt, Choline Chloride, Taurine, Vitamins, Minerals

Sensitivity flags

May matter for individual dogs

chickenbeefegglegumes

These flags reflect population-level prevalence of commonly reported canine food allergens in the published literature (Mueller and Olivry 2016), not a prediction that this dog will react. Read how we score this in the dog food rubric and the medical disclaimer.

Source record

Confidence is visible by design.

Captured: May 21, 2026
Confidence: Partially verified
Sources: Merrick official product page captured May 21, 2026 (AAFCO standard-form, verbatim pending)
Chewy 12 lb price captured May 21, 2026
Adequacy: Merrick Purrfect Bistro Grain-Free Real Chicken + Sweet Potato Recipe is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for the maintenance of adult cats.

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Buying Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato

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FAQ

About Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato

What is the PetScored rating for Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato?

Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato scores 7.6 out of 10 on the PetScored deterministic rubric. Strongest sub-score: Nutrition Fit. Weakest sub-score: Value. See the full sub-score breakdown and rule-event trail on the scorecard.

Is Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato good for dogs with food sensitivities?

Skip this food if your dog avoids chicken, beef, egg, legumes. These are common adverse-reaction trigger ingredients in published case series. If your dog tolerates these proteins, the sub-score reflects the population-level risk; individual dogs vary.

Is Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato AAFCO complete and balanced?

Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato carries this AAFCO adequacy statement: "Merrick Purrfect Bistro Grain-Free Real Chicken + Sweet Potato Recipe is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for the maintenance of adult cats…" This is an adult-maintenance statement - not adequate for puppies, growth, or pregnancy.

What life stage is Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato for?

Per the bag, Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato is intended for Adult (format: Kibble). Always cross-check the AAFCO statement on your actual bag, since recipes and life-stage designations can change between production runs.

How much does Merrick Purrfect Bistro Grain-Free Chicken & Sweet Potato cost per calorie?

Captured retailer price: $43.98 for a 12 lb bag bag, at 3759 kcal/kg. PetScored Value sub-score benchmarks cost per 1,000 kcal against the category median rather than the sticker price - see the Value detail on the scorecard.

This score is our opinion, formed by applying a published rubric to label and public source records, not a statement of objective fact and not veterinary advice. Label fields we cannot verify are marked by source confidence rather than assumed. See the methodology and medical disclaimer.