ROYAL CANIN · REVIEW
Royal Canin Feline Urinary SO + Hydrolyzed Protein
Royal Canin Feline Urinary SO + Hydrolyzed Protein scores 1.7/5 for ingredient quality — a dry food cat food with 25% protein targeting adult cats.
Poor
MiauMiau AI score · 1.7/5
AI ANALYSIS
What MiauMiau's AI actually sees
The first ingredient is brewers rice with hydrolyzed soy as the primary protein, making this a plant-based formula with only 27% DMB protein and estimated 50% carbohydrates. While natural preservatives are used, the lack of whole meats and high carbohydrate load fall short for an obligate carnivore.
According to MiauMiau's analysis of over 5,000+ dry food products, Royal Canin Feline Urinary SO® + Hydrolyzed Protein scores below the dry food average.
Analyzed by MiauMiau's Nutritional AI · June 2026
This analysis is generated from ingredient and compositional data. It is not veterinary advice. Always consult your veterinarian for health decisions.
Score breakdown
HOW IT COMPARES
Royal Canin Feline Urinary SO + Hydrolyzed Protein vs. the category
Compared to the average dry food across 5,000+ products in our database.
Category avg: 2.7/5
Scores 1.0 points below the average dry food
OUR ASSESSMENT
What we like vs. what to watch
What we like
- Clean formula with no controversial additives
- Nutritionally complete — suitable as a sole diet
What to watch
- Ingredient quality is below average
- Protein content falls short of optimal levels
- Contains notable filler ingredients
- High carbohydrate content relative to protein
WHO IT'S FOR
Is this right for your cat?
Not ideal for
INGREDIENTS
What's actually in the bag
Top ingredients
- 01Brewers rice
- 02hydrolyzed soy protein
- 03chicken fat
- 04powdered cellulose
- 05natural flavors
Ingredients are listed by weight. The first ingredients make up the majority of the formula.
NUTRITION
The numbers
Guaranteed analysis
Dry matter basis
Dry matter basis removes water content for accurate comparison between wet and dry foods.
FULL LABEL
Every ingredient
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
FAQ
Questions worth answering
Is Royal Canin Feline Urinary SO + Hydrolyzed Protein good for cats?
According to MiauMiau's AI analysis, Royal Canin Feline Urinary SO + Hydrolyzed Protein is a below-average dry food with a quality score of 1.7 out of 5. The first ingredient is brewers rice with hydrolyzed soy as the primary protein, making this a plant-based formula with only 27% DMB protein and estimated 50% carbohydrates. While natural preservatives are used, the lack of whole meats and high carbohydrate load fall short for an obligate carnivore.
What is the protein content of Royal Canin Feline Urinary SO + Hydrolyzed Protein?
Royal Canin Feline Urinary SO + Hydrolyzed Protein contains 25% protein as listed on the label. On a dry matter basis, that's 27.17% protein. Dry matter basis is the fairest way to compare protein between wet and dry foods because it removes water content from the equation.
Is Royal Canin Feline Urinary SO + Hydrolyzed Protein grain-free?
No, Royal Canin Feline Urinary SO + Hydrolyzed Protein is not grain-free and contains grain-based ingredients. For most cats, grains are perfectly safe and provide a source of energy. However, cats with diagnosed grain allergies may need a grain-free alternative.
How does Royal Canin Feline Urinary SO + Hydrolyzed Protein compare to other dry food?
According to MiauMiau's database of over 5,000+ cat food products, Royal Canin Feline Urinary SO + Hydrolyzed Protein scores 1 points below the average dry food quality score of 2.7. MiauMiau's AI evaluates ingredient quality, protein adequacy, filler content, and additive safety to generate each score.
Is Royal Canin Feline Urinary SO + Hydrolyzed Protein suitable for kittens or senior cats?
Royal Canin Feline Urinary SO + Hydrolyzed Protein is formulated for adult cats. If you have a kitten or a senior cat, look for formulas specifically designed for their life stage.
What are the main ingredients in Royal Canin Feline Urinary SO + Hydrolyzed Protein?
The top 5 ingredients in Royal Canin Feline Urinary SO + Hydrolyzed Protein are: Brewers rice, hydrolyzed soy protein, chicken fat, powdered cellulose, natural flavors. The primary ingredient is Brewers rice. The remaining top ingredients are hydrolyzed soy protein, chicken fat, powdered cellulose, natural flavors. Ingredient order indicates proportion by weight, so the first ingredients make up the bulk of the formula.
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