1. INTRODUCTION
LOVE IN SERVICE OF YOUR PETS’ HEALTH
Your pet’s health starts in their bowl. Because every animal is unique, APPETTO set out to develop one of Europe’s most comprehensive, objective, and transparent pet food rating methodologies.
Our system now evaluates not only kibble, but also wet food and single-ingredient foods (fruits, vegetables, meats, and more), with dedicated scoring systems and criteria tailored to each category.
Our ambition is simple: to provide pet families, veterinarians, educators, and manufacturers with a scientific, accessible, and ethical framework that helps everyone understand what is in the bowl — and make informed decisions with confidence.
2. RATING METHODOLOGY BY PRODUCT CATEGORY
2.1. DRY FOOD (KIBBLE) – DETAILED SCORING SYSTEM & RATIONALE
2.1.1. Scoring system: 20 points, weighted criteria
1.1. Protein quality (0 to 6 points)
Proteins are the cornerstone of your companion’s nutrition. They support growth, help maintain muscle mass, and contribute to overall vitality.
- Protein origin (0-3 points): We award up to 3 points based on the origin of the proteins. Proteins from fresh muscle meat or high-quality dehydrated meat, such as chicken or fish, receive the highest score because they provide a complete profile of essential amino acids. If the recipe includes animal by-products or lower-quality proteins, the score is reduced, as these ingredients are generally less digestible and less beneficial to the animal’s health.
- 3 points: Proteins from fresh muscle meat or high-quality dehydrated meat (e.g. fresh chicken, trout, unprocessed beef, fresh lamb).
- 2 points: Good-quality animal proteins that are more processed but contain no by-products (e.g. intermediate dehydrated meats such as dehydrated duck or dehydrated turkey).
- 1 point: Proteins including lower-quality animal by-products (e.g. feet, feathers, beaks, less digestible meats).
- 0 points: Plant proteins or very low-quality by-products (e.g. feather meal, soy protein, corn).
Additional guidelines:
- A. Enrich examples:
-
- 3 points: Fresh chicken, trout, unprocessed beef, fresh lamb.
- 2 points: Intermediate dehydrated meats such as dehydrated duck or dehydrated turkey.
- 1 point: Feet, feathers, beaks, less digestible meats.
- 0 points: Feather meal, plant proteins such as soy or corn.
- B. Clarify criteria:
-
- Higher quality: From whole animal sources without excessive processing.
- Medium quality: From processed animal sources without by-products.
- Lower quality: Includes by-products or less nutritious animal parts.
- Digestibility and bioavailability (0-3 points): Digestibility is a key criterion. An easily digestible protein is better absorbed by the body and therefore provides greater nutritional value. Highly digestible proteins, such as those from fresh meat or fish, receive 3 points. Plant proteins or less digestible animal by-products receive a lower score.
- 3 points: Highly digestible proteins (e.g. raw trout, fresh chicken, fresh beef).
- 2 points: Proteins with acceptable digestibility (e.g. intermediate dehydrated meats, dehydrated duck).
- 1 point: Proteins from by-products or lower-quality sources, with lower digestibility (e.g. feather meal).
- 0 points: Plant proteins or very low-quality proteins, poorly digestible for carnivores.
Additional guidelines:
- A. Define digestibility indicators:
-
- 3 points: From highly digestible sources such as raw trout, fresh chicken, or fresh beef.
- 2 points: From partially processed or dehydrated sources.
- 1 point: From by-products or less digestible sources.
- 0 points: Plant proteins or very low-quality proteins with poor digestibility.
- B. Add concrete examples:
-
- Highly digestible: Raw trout, fresh chicken.
- Acceptable digestibility: Intermediate dehydrated meats.
- Less digestible: Feather meal, animal by-products.
1.2. Fats: the right balance for a healthy, shiny coat (0 to 5 points)
Fats are essential for energy, skin and coat health, and the proper functioning of the brain and organs.
- Fat sources (0-3 points): We favour animal-based fats such as duck fat or salmon oil, which are rich in omega-3 and omega-6 fatty acids. They provide not only energy, but also essential fatty acids that support heart and joint health. Plant-based fat sources, such as flaxseed oil, are also valued for their omega-3 contribution, but receive a slightly lower score if used in excess compared with animal fats.
- 3 points: High-quality animal fats (e.g. salmon oil, chicken fat) representing at least 50% of total fats.
- 2 points: A mix of good-quality animal and plant fats (e.g. flaxseed oil, rapeseed oil), with animal fats representing between 30% and 50% of total fats.
- 1 point: Mostly plant-based fats (e.g. corn oil, soybean oil) representing more than 50% of total fats.
- 0 points: No high-quality animal fat or an excess of unsuitable plant fats (e.g. large amounts of corn oil).
Additional guidelines:
- A. Define clear proportion thresholds:
-
- 3 points: High-quality animal fats represent at least 50% of total fats.
- 2 points: A mix of good-quality animal and plant fats, with animal fats representing between 30% and 50%.
- 1 point: Mostly plant-based fats representing more than 50% of total fats.
- 0 points: No high-quality animal fat or an excess of unsuitable plant fats.
- B. Clarify fat types:
-
- High-quality animal fats: Salmon oil, chicken fat, duck fat.
- Good-quality plant fats: Flaxseed oil, rapeseed oil.
- Mostly plant-based fats: Corn oil, soybean oil, sunflower oil.
- Omega-6 / omega-3 ratio (0-2 points): A balanced omega-6 to omega-3 ratio, ideally between 1:1 and 5:1, is essential to help limit inflammation and support overall health. An optimal ratio receives 2 points, while an imbalance, with too much omega-6 compared with omega-3, reduces the score.
- 2 points: Balanced ratio between 1:1 and 5:1.
- 1 point: Acceptable but imbalanced ratio (e.g. 6:1) or ratio not provided.
- 0 points: Highly imbalanced ratio (e.g. >10:1).
1.3. Carbohydrates: Just the Right Amount (0 to 5 points)
Although not essential for carnivores, carbohydrates can provide a readily available source of energy.
- Total Carbohydrate Content (0-3 points): We prefer kibble with a low carbohydrate content, especially for cats. Kibble containing less than 20% carbohydrates receives 3 points. A higher carbohydrate level (20-30%) will receive between 1 and 2 points, while an excess above 30% receives no points.
Total Carbohydrate Content (0-3 points)
- 3 points: <20% carbohydrates.
- 2 points: 20-30% carbohydrates.
- 1 point: 31-40% carbohydrates or carbohydrate content not specified but the presence of ingredients indicating a moderate carbohydrate level.
- 0 points: >40% carbohydrates.
Additional Instructions:
- If the carbohydrate content is not explicitly stated:
-
- Analyze the ingredient list to identify carbohydrate sources (e.g., potatoes, peas, beans).
-
- Presence of carbohydrate-rich ingredients in significant proportions suggests a high carbohydrate content. Assign 1 point.
- Presence of moderately carbohydrate-rich ingredients without excess. Assign 1 point.
- Absence or low presence of carbohydrate-rich ingredients. Assign 3 points.
- If impossible to estimate, assign a neutral score of 1 point.
- Calculate an approximate estimate based on the relative proportions of carbohydrate-rich ingredients.
- Ingredient-Based Calculation:
-
- High-Carbohydrate Ingredients (>30%): If the formula includes several carbohydrate-rich sources such as potatoes, peas, and beans, estimate the carbohydrate content between 30-40%. Assign 1 point.
- Low-Carbohydrate Ingredients (<20%): If carbohydrates come mainly from low-carbohydrate sources such as certain vegetables in small proportions, assign 3 points.
- Moderate-Carbohydrate Ingredients (20-30%): If carbohydrates are present but not excessive, assign 2 points.
- Type of Starch Used (0-2 points): The quality of carbohydrates is just as important as their quantity. We favor starches from sources such as rice or sweet potatoes, which are easier to digest. Heavier starches such as corn or legumes, which may cause digestive sensitivities, receive fewer points.
- 2 points: Easily digestible starches (e.g., rice, sweet potato, potato, quinoa).
- 1 point: Heavy starches (e.g., corn, wheat, barley, rye).
- 0 points: Poorly digestible starches (e.g., legumes such as peas, lentils, chickpeas) or large quantities of starch (e.g., excessive corn).
Additional Instructions:
- If the type of starch is not explicitly stated:
-
- Analyze the ingredient list to identify starch sources.
-
- Presence of easily digestible sources (e.g., rice, sweet potato, potato). Assign 2 points.
- Presence of heavy sources (e.g., corn, wheat, barley). Assign 1 point.
- Presence of poorly digestible sources (e.g., legumes, excessive corn). Assign 0 points.
- If the formula includes easily digestible starches (e.g., potatoes), assign 2 points.
- If the starches present are mainly corn or wheat, assign 1 point.
- If legumes or large quantities of starch are present, assign 0 points.
- If impossible to determine, assign a neutral score of 1 point.
1.4. Functional Ingredients: Superfoods for Our Super Pets (0 to 4 points)
Some ingredients provide additional benefits that go beyond basic nutrition.
- Presence of Beneficial Additives (0-2 points): We value kibble that includes additives such as prebiotics, probiotics, and chondroprotective ingredients. These components support digestion, joint health, and the immune system. Products enriched with these additives can receive up to 2 points.
- 2 points: Includes prebiotics, probiotics, and chondroprotective ingredients (e.g., fructo-oligosaccharides, probiotics, glucosamine, chondroitin, mannan oligosaccharides, yeast-derived probiotics).
- 1 point: Includes standard additives (e.g., vitamins, basic minerals) or unspecified but identifiable beneficial additions (e.g., brewer’s yeast, dehydrated algae).
- 0 points: No beneficial additions or presence of artificial additives with no specific benefits (e.g., artificial colourings, preservatives with no nutritional benefit).
Additional Instructions:
- If beneficial additives are not explicitly mentioned:
-
- Analyze the ingredient list to identify known beneficial components:
-
- Positive examples: brewer’s yeast (probiotics), dehydrated algae (omega-3, antioxidants), fructo-oligosaccharides (prebiotics).
- If beneficial additives are identified: Assign 1 point.
- If no identifiable beneficial additive is found: Assign 0 points.
- Assign a neutral score of 1 point if beneficial additives can be indirectly inferred.
- Ingredient Transparency (0-2 points): Transparency is essential to us. We reward brands that clearly detail the origin and quality of their ingredients, as well as their production methods. Full transparency receives 2 points, while vague or insufficient communication reduces the score.
- 2 points: Full transparency regarding the origin and quality of ingredients, with clear production methods. The ingredient list is complete and detailed, with specific percentages for the main components.
- 1 point: Partial transparency, with information provided only in part. Some ingredients are detailed, but key information is missing, such as percentages or exact origin.
- 0 points: No transparency, with vague or insufficient information. The actual ingredient composition or production methods are not clearly defined.
Additional Instructions:
- Define Transparency Criteria:
-
- 2 points: Complete and detailed ingredient list with specific percentages for the main ingredients. Includes information about production methods.
- 1 point: Information partially provided, with key details missing such as percentages or the exact origin of certain ingredients.
- 0 points: Vague or insufficient information, with no details about the actual composition or production methods.
- Add Concrete Examples:
-
- Full Transparency: “Complete ingredient list with percentages of raw trout, dehydrated duck, etc.”
- Partial Transparency: “Ingredient list provided without specific percentages for certain components.”
- No Transparency: “Generic ingredient list with no precise details.”
1.5. Final Categorization
|
Total Score |
Category |
Interpretation |
|---|---|---|
|
18–20 |
A |
Excellent nutritional quality, with a very high level of transparency and standards |
|
15–17 |
B |
Good quality, balanced and reassuring formulation |
|
11–14 |
C |
Acceptable, with no excesses but no standout strengths |
|
6–10 |
D |
Poor quality, formulas to avoid for regular use |
|
0–5 |
E |
To be avoided, potentially unsafe or untrustworthy recipes |
2.2. WET FOOD – ADAPTED SCORING METHODOLOGY & KEY PRINCIPLES
2.2.1. General Principles
The nutritional quality assessment of wet foods is based on a 20-point scoring system, fully aligned with the kibble methodology but adapted to the specific characteristics of wet pet foods. Each criterion is scored independently according to objective thresholds derived from veterinary recommendations and scientific literature. All nutritional ratios and percentages are calculated on a Dry Matter Basis (DMB) to allow reliable comparisons between products with high moisture content. Transparency (ingredient details, origin, percentages, etc.) and the presence of beneficial additives (prebiotics, probiotics, chondroprotective agents) are systematically rewarded.2.2.2. Reference Conversions
All conversions are strictly standardized: Dry Matter (% DMB):- Allows protein, fat, and carbohydrate levels to be converted to a comparable basis between highly moist products.
- Formula: DMB % = Value ÷ (100 − Moisture) × 100
Round to one decimal place (e.g., 35.4%).
- NRC Formula (kcal/kg): ME = 10 × [3.5 × Protein + 8.5 × Fat + 3.5 × Carbohydrates]
Protein, fat, and carbohydrates are expressed on a DMB basis.
Round the final result to the nearest whole number (e.g., 1246 kcal/kg).
- Formula: (As-fed value (%) × 10) ÷ (ME ÷ 1000) Round to one decimal place (e.g., 2.8 g/1000 kcal).
- Used to evaluate mineral balance (see below).
2.2.3. Detailed Scoring System (Maximum Points Indicated)
Each criterion is assessed independently. Maximum total score = 20 points.- Proteins – Up to 6 Points
- 3 pts: At least three premium meat or organ ingredients (muscle meat, hearts, livers, etc.), with no plant protein sources.
- 2 pts: ≤10% plant protein and no mention of by-products.
- 1 pt: >10% plant protein or the presence of by-products (unspecified organs, poultry meal, etc.).
- 0 pts: Entirely plant-based proteins or very low-quality by-products (feather meal, soybean meal, etc.).
- 3 pts: Fresh whole meat or highly digestible animal ingredients (chicken, raw salmon, fresh liver, etc.).
- 2 pts: High-quality dehydrated meats or clearly identified animal hydrolysates.
- 1 pt: Significant presence of by-products or a high proportion of plant proteins.
- 0 pts: Very low digestibility (hydrolyzed feathers, fibrous residues, etc.).
- Fats – Up to 4 Points
- 3 pts: ≥50% animal-derived fats (chicken fat, salmon oil, etc.).
- 2 pts: 30–49%.
- 1 pt: <30%.
- 0 pts: No animal fat source or inappropriate fats (palm oil, exclusively vegetable oils, etc.).
- +1 pt: If the omega-6 to omega-3 ratio is strictly between 1:1 and 5:1, either provided directly or inferred from added oils (flaxseed/salmon = ω-3, sunflower = ω-6).
- 0 pts: Ratio not provided, outside the target range, or impossible to determine.
Total Fat Score = 2.1 + 2.2 (Maximum 4 points).
- Carbohydrates, Texture Agents, Completeness – Up to 2 Points
- 2 pts: <12% DMB AND easily digestible starches (rice, sweet potato, tapioca, etc.).
- 1 pt: 12–20% DMB or mention of the word “sugar/sugars”.
- 0 pts: ≥20% DMB or presence of legumes/heavy starches (peas, lentils, corn, etc.).
- 1 pt: Agar, locust bean gum, guar gum, xanthan gum, lignocellulose in moderate amounts.
- 0 pts: Carrageenan, poligeenan, heavy starches.
- 2 pts: Explicit “complete and balanced” statement (FEDIAF/AAFCO), with life stage specified (puppy, adult, senior).
- 1 pt: Complete food without life stage indication, or enriched complementary food (added vitamins/minerals).
- 0 pts: Simple complementary food.
- Mineral Balance – Up to 2 Points
- 2 pts: Ca:P between 1.1:1 and 1.8:1 AND phosphorus ≤4 g/1000 kcal AND sodium ≤3.75 g/1000 kcal.
- 1 pt: Ca:P between 1.0:1 and 2.0:1 AND phosphorus between 4–6 or sodium between 3.75–5 g/1000 kcal.
- 0 pts: Values outside these ranges, phosphorus >6, sodium >5.
- Beneficial Additives – Up to 2 Points
- 2 pts: Presence of at least two families of beneficial additives:
- 1 pt: Only one family present.
- 0 pts: No beneficial additives, or presence of harmful additives (BHA, BHT, ethoxyquin, etc.).
- Transparency – 1 Point
- 1 pt: Detailed percentages, ingredient origin specified, manufacturing process explained (e.g., “chicken 60%, EU, gentle cooking”).
- 0 pts: Otherwise (vague information, unclear marketing claims, etc.).
- Special Rules and Automatic Penalties
- If the word “sugar” or “sugars” appears, the carbohydrate sub-score 3.1 can never exceed 1 pt.
- The mention of “broth” only affects moisture content and never proteins or DMB calculations.
- Any mention of “vegetable protein extracts” must be counted in the plant protein percentage.
- Oils: flaxseed → ω-3 / sunflower → ω-6 for ratio calculation.
- The presence of carrageenan systematically sets the texture sub-score to zero, even if other agents are present.
2.2.4. Summary Scoring Table (for the Final Score out of 20 pts)
Criterion |
Max Points |
| Proteins | 6 |
| Fats | 4 |
| Carbohydrates and Starches | 2 |
| Mineral Balance | 2 |
| Beneficial Additives | 2 |
| Transparency | 1 |
| Texture Agents | 1 |
| Completeness and Life Stage | 2 |
| TOTAL | 20 |
2.2.5. Final Categorization
- A: 18–20 pts – Excellent nutritional quality
- B: 15–17 pts – Good quality
- C: 11–14 pts – Average, acceptable quality
- D: 6–10 pts – Low quality
- E: 0–5 pts – To be avoided
2.3. TREATS
2.3.1 Subcategories
Each treat is assigned to one and only one subcategory among the following:
- Dry Biscuits (oven-baked, often cereal-based)
- Soft Treats (soft/semi-moist treats, often containing glycerol)
- Dental Sticks (stick-shaped, porous or fibrous texture)
- Chews / Chew Bones (skins, rawhide, collagen, tendons, trachea, antlers, etc.)
- 100% Dried Meat Treats (freeze-dried, dehydrated, 100% animal-based, low moisture, starch-free)
Rule: if several indicators coexist, the subcategory with the most decisive markers is retained. Example: collagen → chews / chew bones; 100% animal freeze-dried product → 100% dried meat treats. By default, the category is soft treats.
2.3.2 Criteria & Scoring System
A) Proteins (0–7 pts)
- Protein Source (0–2)
2: Named single-source 100% animal protein; 1: Mixed/generic animal sources or multiple species; 0: Predominantly plant-based or collagen-based matrices. - Digestibility (0–2)
2: Named muscle meats/organs (whole fish, eggs, dairy products); 1: Multiple species or by-products; 0: Predominantly cereals/legumes or collagen.
“Bakery Rule”: if biscuits, soft treats, or sticks have refined starches/flours among the top 3 ingredients ⇒ 0. - Processing Method (0–3)
3: Jerky/freeze-dried/dehydrated; 2: Oven-baked biscuits; 1: Chews/cold-pressed products; 0: Dental sticks or unknown process.
Protein Subtotal = 0–7.
B) Fats (0–3 pts, informational)
- Total Fat Content (0–2): 2 if ≥95% animal-derived; 1 if mixed/unclear; 0 if very low or plant-based.
Minimum thresholds: cereal-based biscuits → 1; fatty chews ≥5% fat → ≥1; jerky with ≥95% animal ingredients → 2. - Omega-3 Content (0–1): 1 if a clear source is present (fish, fish oil, flaxseed, chia, rapeseed).
Fat Subtotal = 0–3.
C) Carbohydrates & Salt (0–6 pts)
- Carbohydrates (0–2): 2 if free from carbohydrate-rich ingredients; 1 if moderate and without sweeteners; 0 if cereal-based or containing sweeteners.
Hard Rule: any detected sweetener ⇒ 0. - Starch Type (N/A, 0, 1): N/A if no starch is present or if category = chews/jerky; 1 for tubers/legumes; 0 for high-GI cereals.
- Sugars & Salt (0–2): 2 if no sweeteners and salt is discreet; 1 if salt is present without sugar; 0 if sugar, syrups, or glycerol are present.
- Mineral Balance (0–1): 1 if minerals are quantified (at least one with a unit) or if the product is a single-ingredient animal product; otherwise 0.
Carbohydrate Subtotal = 0–6.
D) Functional Benefits, Transparency, Naturalness & Dental Support (0–4 pts)
- Additives (0–1): +1 for neutral antioxidants (tocopherols, citric acid, rosemary), pre/probiotics, or chondroprotective ingredients.
- Transparency (0–2): 2 if the ingredient list is clear + key ingredient percentages are provided + official energy/mineral values are available; 1 if 2 out of 3 criteria are met; 0 otherwise.
- Naturalness (0–2): 2 if single-ingredient animal product with no additives; 1 if “100% animal” claim with no starches or sweeteners; 0 otherwise.
- Dental Benefit (0–1): 1 if cellulose ≥2% with stick/porous texture indicators, or if dental actives are present below threshold levels (SHMP, STPP/TSPP/SAPP, enzymes, ZnSO₄, algae, fish skins).
Functional Subtotal = 0–4.
Subcategory-Specific Features: Compensation Rules & Score Ceilings
Dry Biscuits
• Potential strengths: processing method (2), transparency (1–2), useful neutral additives (1).
• Typical weaknesses: digestibility = 0 if refined starches/flours appear among the first three ingredients; often unfavorable starch type; possible sweeteners.
• Score ceilings & compensation: if refined flour/starch appears among the first three ingredients, the carbohydrate subtotal is capped (rarely exceeds 3); presence of a sweetener ⇒ carbohydrate load = 0 (non-compensable). Strong transparency and neutral additives may limit point loss, but an A rating is highly unlikely if sweeteners are present.
Soft Treats
• Potential strengths: clearly identified animal-based ingredients, possible omega-3 content, and good transparency.
• Typical weaknesses: glycerol is frequently present ⇒ carbohydrate load = 0; naturalness is often limited; starch sources may vary.
• Score ceilings & compensation: without sweeteners and with a correct fat profile + good transparency, a B rating is achievable; an A rating remains uncommon. Naturalness is capped at ≤1 if additives, starches, or sweeteners are present.
Dental Sticks
• Potential strengths: dental benefit (+1) through cellulose ≥2% or dental actives below threshold levels; transparency through quantified mineral values.
• Typical weaknesses: processing score = 0; possible sweeteners; safety penalty depending on shape (long/rolled sticks) or overdosed actives.
• Score ceilings & compensation: protein scores are often limited (processing score of 0 and “bakery rule” if refined starches are present). A B rating is achievable without sweeteners and with cellulose/dental actives, discreet salt, and quantified mineral values.
Chews / Chew Bones
• Potential strengths: chewing bonus (+1) for non-collagen-based pieces requiring prolonged chewing; sometimes a favorable fat profile.
• Typical weaknesses: collagen/skins/rawhide derivatives ⇒ collagen penalty (−1) and stricter protein assessment; safety penalty (−1 to −3) depending on format.
• Score ceilings & compensation: if collagen is detected, no chewing bonus is awarded; transparency does not compensate for a high safety penalty. A/B ratings are uncommon.
100% Dried Meat Treats
• Potential strengths: processing method (3), high source quality and digestibility, carbohydrates not applicable, naturalness (2) if additive-free.
• Typical weaknesses: salt can sometimes be high; lack of quantified mineral values may reduce transparency.
• Score ceilings & compensation: an A rating is achievable if salt is discreet and transparency is strong; naturalness is capped at ≤1 if additives are present.
Non-Compensable Factors (Hard Limits)
• Detected sweetener: carbohydrate load is set to 0 and cannot be improved by other criteria.
• Collagen/skins/rawhide: triggers a collagen penalty and blocks the chewing bonus.
• Overdosed dental actives (e.g., polyphosphates above thresholds, chlorhexidine >0.03%): generate a significant safety penalty that cannot be compensated elsewhere.
• Refined starch among the top 3 ingredients: penalizes digestibility and severely limits the carbohydrate subtotal.
2.3.3 Bonuses & Penalties
- Chewing Bonus (+1): only for chews/bones, prolonged chewing, and no collagen.
- Collagen Penalty (−1): collagen, skins, rawhide, trachea, tendons, cartilage, beef nerves.
- Safety Penalty (−1 to −3):
−3: agglomerated or pressed rawhide, highly obstructive items.
−2: long rolled sticks, SHMP >0.5%, chlorhexidine >0.03%.
−1: items requiring supervision (trachea, esophagus, cartilage), synthetic colorants, excess preservatives.
Cumulative penalty capped at −3. If collagen penalty = −1, chewing bonus becomes 0.
2.3.4 Score Calculation & Classification
Total (0–20):
Total = proteins + fats + carbohydrates + functional benefits + bonuses − penalties
Rounded to the nearest whole number, capped between 0 and 20.
Class:
- A: 18–20 pts – Excellent nutritional quality
- B: 15–17 pts – Good quality
- C: 11–14 pts – Average but acceptable quality
- D: 6–10 pts – Low quality
- E: 0–5 pts – To be avoided or not recommended
2.3.5 Controls and Balances
- Balance Between Criteria: some weaknesses can be offset by strengths. Examples:
• A cereal-based biscuit low in protein but well formulated (correct fat profile, transparency, neutral additives) can limit point loss.
• A dental stick can receive a dental benefit score that partially offsets lower protein quality.
• A single-ingredient dried meat treat, even without quantified mineral values, remains favored by its naturalness and processing method. - Missing Data: marked as “Not specified”.
- Key Glossary: sweeteners (glycerol, syrups, sugars), starches (cereals, starches, tubers, legumes), omega-3 sources (fish, flaxseed, chia, rapeseed), collagen and derivatives (skins, tendons, cartilage), potentially risky additives (BHA, BHT, nitrites, colorants, xylitol, etc.).
SINGLE-INGREDIENT FOODS (FRUITS, VEGETABLES, MEATS, ETC.) – SCIENTIFIC SYNTHESIS METHODOLOGY
Data Collection (Step 1):
- Systematic review of at least 5 veterinary and institutional sources (SantéVet, FEDIAF, AVMA, ASPCA, etc.).
- For each source:
- Exact citation and context of the recommendation (portion size, frequency, preparation methods, edible or non-edible parts, etc.).
- Identification of differing opinions (consensus, exceptions, contraindications).
- Description of symptoms and onset times in cases of toxicity.
- Specific recommendations for puppies/kittens, senior pets, and at-risk breeds.
- Each piece of raw information is presented separately, without synthesis or rewording: factual data accumulation only.
Tabulation and Consolidation (Step 2):
- Consolidated information is recorded separately for each species (dog / cat).
- Detailed columns include: authorization status, nutritional benefits, risks/toxicity, affected parts, exact recommendations, scientific explanations, preparation methods, precise serving size, frequency, symptoms, onset time, at-risk breeds, and safe alternatives.
- Any missing information or absence of at least 3 reliable sources triggers a warning: “Insufficient Data” or “Species Data Missing”.
- Strict exclusion applies when unreliable sources are identified (forums, social media, etc.).
3. CONTROL FLOW AND QUALITY ASSURANCE
Raw Data Collection and Double Entry:
All data is entered twice by two different individuals and then cross-checked to eliminate transcription errors.Automated Calculations and Manual Validation:
Calculations (Dry Matter, kcal/kg, ratios, etc.) are performed using automated scripts and subsequently validated by a designated reviewer.Triple Verification Before Publication:
Verification includes textual accuracy, calculation accuracy, and consistency between sub-scores and the final score. Any correction automatically restarts the entire validation process.Source Archiving:
Each product or food profile includes a comprehensive list of all sources used during the evaluation process.Public Justification Upon Request:
Any score or sub-score can be publicly justified, and every piece of information can be traced back to its original source.4. FUTURE IMPROVEMENTS AND CONTINUOUS INNOVATION
- Full integration of cat-specific evaluations (scoring systems adapted to strict carnivore requirements, with a focus on taurine, animal fats, ultra-high digestibility, and species-specific nutritional needs).
- Personalized scoring systems based on age, breed, life stage, neuter status, known allergies, activity level, and other individual characteristics.
- Transparency Label: highlighting products for which ingredient percentages, sourcing information, and manufacturing methods are fully disclosed and independently verified.
- Expansion to additional food categories (home-prepared diets, treats, therapeutic diets, supplements, and other specialized nutrition products).
- Ethical and environmental criteria: assessment of sustainability practices, carbon footprint, packaging choices, and manufacturers’ corporate social responsibility commitments.
- Continuous updates of scoring systems and evaluation criteria, supported by ongoing scientific monitoring (veterinary publications, product recalls, food safety alerts, emerging research, etc.).
- Collaborative development with users, veterinarians, and industry professionals: every suggestion may contribute to future improvements of the APPETTO evaluation framework.
5. LONG-TERM VISION
- Demonstrating that independent, transparent, scientific, and continuously evolving evaluations are possible,
- Empowering both pet owners and professionals to make informed decisions with confidence,
- Encouraging manufacturers to improve practices and increase labeling transparency,
- Contributing to better animal health, a more ethical pet food industry, and a better-informed society.