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Purina Pro Plan Veterinary Diets HA Hydrolyzed Feline Formula Dry Cat Food Royal Canin Feline Urinary SO + Hydrolyzed Protein Dry Cat Food

Royal Canin Feline Urinary SO + Hydrolyzed Protein Dry Cat Food scores higher on KibbleLab, 8.8 to 8.4. Compare ingredients, guaranteed analysis, and AAFCO nutritional adequacy, side by side.

Purina Pro Plan Veterinary Diets HA Hydrolyzed Feline Formula Dry Cat Food and Royal Canin Feline Urinary SO + Hydrolyzed Protein Dry Cat Food compared

Nutrients:
As Fed
Purina Pro Plan Veterinary Diets HA Hydrolyzed Feline Formula Dry Cat Food
Purina Pro Plan Veterinary Diets HA Hydrolyzed Feline Formula Dry Cat Food

Verified Jul 25, 2026

Royal Canin Feline Urinary SO + Hydrolyzed Protein Dry Cat Food
Royal Canin Feline Urinary SO + Hydrolyzed Protein Dry Cat Food

Verified Jul 22, 2026

KibbleLab score The KibbleLab expert rating, 0 to 10, based on published veterinary science.
8.4 / 10 8.8 / 10
Guaranteed analysis (as fed)
Protein Guaranteed analysis gives label minimums and maximums, not measured values, shown as fed.
31.00% 25.00%
Fat 9.00% 14.00%
Fiber 4.00% 6.90%
Calcium 1.00% 0.90%
Phosphorus 0.80% 0.90%
Moisture Higher moisture means a wetter food; it dilutes the other percentages above.
10.00% 8.00%
Calories 3428 kcal/kg 3628 kcal/kg
Calorie density Moderate Moderate
Ingredients
Full ingredient list Every ingredient on each label, in order of weight.
Rice starch, hydrolyzed soy protein isolate, partially hydrogenated canola oil preserved with TBHQ, hydrolyzed chicken liver, calcium sulfate, powdered cellulose, hydrolyzed chicken, corn oil, tricalcium phosphate, fish oil, L-Lysine monohydrochloride, sodium bisulfate, potassium chloride, choline chloride, phosphoric acid, DL-Methionine, salt, guar gum, taurine, Vitamin E supplement, magnesium oxide, zinc sulfate, ferrous sulfate, niacin (Vitamin B-3), manganese sulfate, Vitamin A supplement, calcium pantothenate (Vitamin B-5), thiamine mononitrate (Vitamin B-1), copper sulfate, riboflavin supplement (Vitamin B-2), Vitamin B-12 supplement, pyridoxine hydrochloride (Vitamin B-6), folic acid (Vitamin B-9), Vitamin D-3 supplement, calcium iodate, biotin (Vitamin B-7), menadione sodium bisulfite complex (Vitamin K), sodium selenite. Show full list
Brewers rice, hydrolyzed soy protein, chicken fat, powdered cellulose, natural flavors, vegetable oil, dried chicory root, salt, fish oil, calcium sulfate, potassium chloride, sodium pyrophosphate, monocalcium phosphate, sodium silico aluminate, sodium bisulfate, calcium carbonate, DL methionine, fructooligosaccharides, choline chloride, taurine, vitamins [DL-alpha tocopherol acetate (source of vitamin E), niacin supplement, D-calcium pantothenate, biotin, pyridoxine hydrochloride (vitamin B6), riboflavin supplement, thiamine mononitrate (vitamin B1), vitamin A acetate, vitamin B12 supplement, folic acid], trace minerals [zinc proteinate, zinc oxide, manganese proteinate, manganous oxide, copper sulfate, ferrous sulfate, sodium selenite, copper proteinate, calcium iodate], marigold extract (Tagetes erecta L.), rosemary extract, preserved with mixed tocopherols and citric acid Show full list
Limited ingredient No No
Health focus Allergy support, Digestive health, Urinary care Urinary care, Digestive health, Skin coat health, Sensitive stomach
Format & suitability
Food type Dry Dry
Texture Kibble Kibble
Processing Not listed Not listed
Life stage Kitten, Adult Adult
Breed size All Breed Sizes All Breed Sizes
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 Not indicated
Life stages Growth (puppy/kitten), Adult Maintenance Not listed
Substantiation How adequacy was established. Feeding trials are the higher bar; formulation means the recipe is calculated to meet the profile.
Formulation Not listed
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 Chewy

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Shared ingredients

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

  • Calcium Sulfate
  • Cellulose Powder

Not sure which is right for your pet?

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Common Questions

Which food scores higher on KibbleLab?

Royal Canin Feline Urinary SO + Hydrolyzed Protein Dry Cat Food scores higher, 8.8 to 8.4 out of 10. Scores reflect published veterinary science.

Do these two foods share ingredients?

Yes. They share these top ingredients: Calcium Sulfate, Cellulose Powder.

Are both foods AAFCO complete and balanced?

Purina Pro Plan Veterinary Diets HA Hydrolyzed Feline Formula Dry Cat Food is labeled complete and balanced; Royal Canin Feline Urinary SO + Hydrolyzed Protein Dry Cat Food does not list an AAFCO status.

See the full profiles: Purina Pro Plan Veterinary Diets HA Hydrolyzed Feline Formula Dry Cat Food and Royal Canin Feline Urinary SO + Hydrolyzed Protein Dry Cat 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.