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Purina ONE Purina One +Plus Vibrant Maturity Adult 7+ Formula Dry Dog Food Royal Canin X-Small Adult 8+ Dry Dog Food

Royal Canin X-Small Adult 8+ Dry Dog Food scores higher on KibbleLab, 8.4 to 8.0. Compare ingredients, guaranteed analysis, and AAFCO nutritional adequacy, side by side.

Purina ONE Purina One +Plus Vibrant Maturity Adult 7+ Formula Dry Dog Food and Royal Canin X-Small Adult 8+ Dry Dog Food compared

Nutrients:
As Fed
Purina ONE Purina One +Plus Vibrant Maturity Adult 7+ Formula Dry Dog Food
Purina ONE Purina One +Plus Vibrant Maturity Adult 7+ Formula Dry Dog Food

Verified Jul 25, 2026

Royal Canin X-Small Adult 8+ Dry Dog Food
Royal Canin X-Small Adult 8+ Dry Dog Food

Verified Jul 21, 2026

KibbleLab score The KibbleLab expert rating, 0 to 10, based on published veterinary science.
8.0 / 10 8.4 / 10
Guaranteed analysis (as fed)
Protein Guaranteed analysis gives label minimums and maximums, not measured values, shown as fed.
28.00% 22.00%
Fat 13.00% 16.00%
Fiber 4.50% 3.60%
Calcium 1.00% Not listed
Phosphorus 0.80% Not listed
Omega-6 1.50% Not listed
Moisture Higher moisture means a wetter food; it dilutes the other percentages above.
12.00% 10.00%
Calories 3786 kcal/kg 3854 kcal/kg
Calorie density Moderate Moderate
Ingredients
Full ingredient list Every ingredient on each label, in order of weight.
Chicken, rice flour, corn gluten meal, chicken by-product meal, soybean meal, whole grain corn, corn germ meal, oat meal, vegetable oil (source of medium-chain triglycerides), whole grain wheat, fish meal, pea fiber, poultry and pork digest, beef fat preserved with mixed-tocopherols, glycerin, calcium carbonate, salt, dried egg product, mono and dicalcium phosphate, caramel color, potassium chloride, dried carrots, dried peas, VITAMINS [Vitamin E supplement, niacin (Vitamin B-3), Vitamin A supplement, calcium pantothenate (Vitamin B-5), thiamine mononitrate (Vitamin B-1), Vitamin B-12 supplement, riboflavin supplement (Vitamin B-2), pyridoxine hydrochloride (Vitamin B-6), folic acid (Vitamin B-9), Vitamin D-3 supplement, menadione sodium bisulfite complex (Vitamin K), biotin (Vitamin B-7)], choline chloride, MINERALS [zinc sulfate, ferrous sulfate, manganese sulfate, copper sulfate, calcium iodate, sodium selenite], L-Lysine monohydrochloride, L-ascorbyl-2-polyphosphate (Vitamin C), garlic oil. Show full list
Brewers rice, chicken fat, chicken by-product meal, corn gluten meal, corn, brown rice, natural flavors, wheat gluten, dried chicory root, vegetable oil, fish oil, psyllium seed husk, potassium chloride, calcium sulfate, calcium carbonate, L-arginine, L-lysine, L-tyrosine, monocalcium phosphate, DL-methionine, fructooligosaccharides, sodium tripolyphosphate, choline chloride, salt, vitamins [DL-alpha tocopherol acetate (source of vitamin E), L-ascorbyl-2-polyphosphate (source of vitamin C), biotin, D-calcium pantothenate, vitamin A acetate, pyridoxine hydrochloride (vitamin B6), niacin supplement, folic acid, thiamine mononitrate (vitamin B1), vitamin B12 supplement, riboflavin supplement, vitamin D3 supplement], magnesium oxide, trace minerals [zinc proteinate, zinc oxide, ferrous sulfate, manganese proteinate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinate], taurine, GLA safflower oil, L-carnitine, marigold extract (Tagetes erecta L.), green tea extract, rosemary extract, preserved with mixed tocopherols and citric acid. Show full list
Limited ingredient No No
Health focus Brain health, High energy, Heart care, Immune support, Joint care Immune support, Heart care, Kidney care, Brain health, Skin coat health, Digestive health, Dental care
Format & suitability
Food type Dry Dry
Texture Kibble Kibble
Processing Not listed Not listed
Life stage Senior Senior
Breed size All Breed Sizes Small
AAFCO nutritional adequacy
Complete & balanced Whether the manufacturer's label claims the food meets AAFCO nutrient profiles for a life stage. Not an independent test.
Yes Yes
Life stages Adult Maintenance Adult Maintenance
Substantiation How adequacy was established. Feeding trials are the higher bar; formulation means the recipe is calculated to meet the profile.
Formulation Formulation
Maker standards
WSAVA guidelines The World Small Animal Veterinary Association publishes criteria for evaluating a manufacturer: qualified nutritionists on staff, feeding trials, and published research. It does not certify or endorse brands.
Yes Yes
PSC accredited The Pet Sustainability Coalition is a nonprofit that accredits pet companies on their environmental and social impact through third-party verification. It reflects sustainability practices, not food quality.
No No
Recalls & where to buy
Recalls on record KibbleLab began logging recalls in July 2026, so earlier recalls may not appear.
None None
Where to buy
Amazon
Amazon

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Shared ingredients

Both foods list these among their top ingredients, by label weight.

  • Corn Gluten
  • Chicken By-Product
  • Vegetable Oil

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Common Questions

Which food scores higher on KibbleLab?

Royal Canin X-Small Adult 8+ Dry Dog Food scores higher, 8.4 to 8.0 out of 10. Scores reflect published veterinary science.

Do these two foods share ingredients?

Yes. They share these top ingredients: Corn Gluten, Chicken By-Product, Vegetable Oil.

Are both foods AAFCO complete and balanced?

Yes, both foods are labeled AAFCO complete and balanced.

See the full profiles: Purina ONE Purina One +Plus Vibrant Maturity Adult 7+ Formula Dry Dog Food and Royal Canin X-Small Adult 8+ Dry Dog Food .

KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.

This is a neutral, factual comparison, not a ranking or an endorsement of either product. A food's guaranteed analysis gives legal minimums and maximums for a few nutrients, not measured values. No one can pay for placement or a higher score.

Product details are compiled from public sources and may not reflect the latest formulation. Represent one of these brands? Request a correction. Anyone else can email us.