Royal Canin Veterinary Diet Adult Urinary SO Small Breed Dry Dog Food, 8.8-lb bag

By Royal Canin Veterinary Diet
Rated 4.7299 out of 5 stars
Veterinary Diet Item
$59.99Chewy Price
$56.99Autoship Price
(Save an extra 5%)

Why Autoship?

  • Save 5% on all future Autoship orders
  • Set your schedule based on your pet's needs
  • No fees, no commitments - skip, change or cancel anytime.

In Stock
FREE 1-3 day delivery

This item requires vet authorization.

Frequently Bought Together

Royal Canin Veterinary Diet Adult Urinary Dog Treats, 17.6-oz bag
Rated 4.3902 out of 5 stars
$11.99Chewy Price
Total Price: $184.54

About This Item


  • A veterinary-exclusive dry dog food for small dogs under 22 lb with urinary health concerns.
  • Helps dissolve pure struvite stones and helps prevent calcium oxalate stones.
  • Lowers the risk of crystal formation using RSS methodology for bladder health.
  • Supports urinary health with an exclusive S/O Index, and creates an environment unfavorable to crystal formation in the bladder.
  • Adapted kibble size for small dogs encourages chewing to help reduce tartar buildup.

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Nutritional Information

Feeding Instructions


Play Video: Learn More About Royal Canin Veterinary Diet From Our Team of Experts
Learn More About Royal Canin Veterinary Diet From Our Team of Experts

About Royal Canin Urinary Health for Dogs

Worried About Your Dog’s Urinary Health?

Your veterinarian is the expert on your dog’s health, so you should always consult with this trusted advisor to find the best urinary health solutions for your pet. Royal Canin works closely with veterinarians to develop dog formulas that support urinary tract and bladder health.

How Can Nutrition Help?

Your veterinarian may recommend a Royal Canin Urinary dog food formula for your best friend. These special formulations can:

Dilute Urine

This helps your dog urinate more often, which can help minimize time for stones to form.

Lower RSS

RSS methodology predicts urine crystallization and is used to develop diets that reduce the risk of stone formation.

Maintain Balance

A precise mineral balance can also help prevent stones from forming.

Set Up Autoship for Consistent Delivery

Last-minute dietary changes can sometimes upset your pet’s stomach. Set your Royal Canin pet food order to Autoship to keep feeding on track and avoid unwanted disruptions.

About Royal Canin

What sets Royal Canin apart is their close collaboration with veterinarians. Through these professional partnerships, they strive to learn everything they can about pet health, including how different formulas perform for different breeds, sizes, lifestyles and therapeutic conditions. Ongoing research and development allows Royal Canin to keep providing the precise nutrition dogs need for a range of medical conditions.

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Top IngredientsBrewers Rice, Corn, Chicken Fat...Chicken By-Product Meal, Brewers Rice, Chicken Fat...Chicken By-Product Meal, Barley, Corn Gluten Meal...Brewers Rice,  Hydrolyzed Soy Protein,  Chicken Fat...Chicken By-Product Meal, Brown Rice, Corn...
Breed SizeExtra Small Breeds, Small BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsExtra Small Breeds, Small BreedsSmall Breeds, Medium Breeds, Large Breeds, All Breeds
Special DietVeterinary Diet, Pea-Free, With GrainSensitive Digestion, Veterinary Diet, High Fiber, With GrainLow Glycemic, Veterinary Diet, Pea-Free, With GrainLimited Ingredient Diet, Veterinary Diet, Pea-Free...Sensitive Digestion, Veterinary Diet, Pea-Free, With Grain
Food FlavorPoultry, ChickenPoultry, ChickenPoultry, ChickenPoultry, ChickenPoultry, Chicken
Health FeatureUrinary Tract HealthDigestive HealthDiabetic Support, Digestive Health, Weight ManagementDigestive Health, Skin & Coat HealthDigestive Health, High-Energy
Food FormDry FoodDry FoodDry FoodDry FoodDry Food

Questions & Answers

10 Customer Questions

Does this have Hydrolyzed Protein?

what does the s/p mean at the bottom of the bag?
Answer by ChewySep 28, 2022
The S/P stands for small/petite. This variety is made with an adapted kibble size for small dogs encourages chewing to help reduce tartar buildup.

made in usa ?
Answer by ChewyJul 26, 2021
The Royal Canin Veterinary Diet Urinary SO Small Breed Dry Dog Food is made in the United States. The manufacturing facilities are in Missouri and South Dakota.

Is the small breed formula different other than size of the kibble? Royal Canin SO dry.
Answer by ChewyMar 30, 2019
This small breed specific formula will be slightly different from the Royal Canin Veterinary Diet Urinary SO Dry Dog Food. The small breed specific formula has a little higher protein, fat and calorie content.

ReviewsWrite a Review

Rated 4.7299 out of 5 stars
411 Ratings
Would recommend to a friend

410 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 1 out of 5 stars
By KN on Jul 12, 2023

Causes Urinary Incontinence

We started giving our Aussie this food due to crystals in her urine and kept her on it for a bit even after the crystals were gone (per our vet’s recommendation). All of a sudden our dog developed a UTI and started peeing herself in her sleep - she has never had issues with either previously - a very healthy senior dog. When the UTI was gone, she was still incontinent and come to find out it’s becUse of the Urinary SO food. Beware of feeding this to your dog long term.

Rated 3 out of 5 stars
By Moe on Jul 10, 2023

Loose bowels

I cut this food into her regular dry food rather than just change her food over to a whole new food. She has had very loose bowels ever since we started it. I’m gonna talk to her vet this week

Rated 5 out of 5 stars
By Na on Jul 5, 2023

Royal Canin

My dog has kidney stones and this food was recommended by the vet and has really improved my dogs urinary track and without surgery yet

Rated 5 out of 5 stars
By CaniacLady on Apr 20, 2023

Good So Far

My sweet fur baby had to start this veterinary diet and I was quite reluctant to change out all of his favorite foods for this new, strict diet. Two weeks into the plan, I am relieved and pleased that so far he has taken to the food quite well. It’s clear that he still misses his yummy treats, but over time, I’m hoping that longing will pass.

Rated 4 out of 5 stars
By She on Jun 10, 2023

Quick Ship!

The dog who needs to eat the prescription food won’t eat it unless I doctor it up. The dog who doesn’t need to eat it loves it. Very quick to ship. Thanks!

Rated 5 out of 5 stars
By Winniesmom on Apr 27, 2023

She loves it

My sweet Brussels Griffin had to have surgery to remove 4 extremely large bladder stones. To keep her healthy her vet prescribed Royal Canin SO. She absolutely loves this food, she's never gobbled up her food as fast as this.

Rated 5 out of 5 stars
By Shannon on Apr 27, 2023

Awesome Dog Food

My dog was fighting a bad urinary infection. He was put on this food and withing 5 days starting peeing normal. Whatever was causing it from his other food, this one helped to start clearing it up.

Rated 5 out of 5 stars
By DebKeedy on Apr 12, 2023

Royal Canin Urinary Food

I have tried other Urinary Tract foods for Meeko and he turned his nose up at all of them. However, no matter what I give him of Royal Canin in Urinary Tract food (dry kibble or canned), he LOVES it! Thank you Royal Canin.

Rated 5 out of 5 stars
By Hanna on May 26, 2023

Amazing will buy again

It was my 1st time ordering from chewy and I loved it came fast shipped fast to thank you so much will buy from u guys again

Rated 5 out of 5 stars
By Buddy on Jun 16, 2023

My dog is such a more healthy dog since he has been on Royal Canin Veternary diet Urinary So