Why Hill’s, Royal Canin, and Pro Plan rank where they do.

What the scores actually say

Start with the full picture. Here is every Hill’s Science Diet, Royal Canin, and Purina Pro Plan recipe we currently score, ranked best to worst. You will not find a hand-picked list here: these numbers come straight from the live dataset, the same ones you would see if you looked up each product yourself.

1. 01Hill's Science Diet Adult Sensitive Stomach & Skin Salmon & Brown Rice Recipe8.4
2. 02Purina Pro Plan Sensitive Skin & Stomach Salmon & Rice8.0
3. 03Hill's Science Diet Adult Large Breed Chicken & Barley7.9
4. 04Hill's Science Diet Adult Chicken & Barley Recipe Dog Food7.7
5. 05Hill's Science Diet Adult Sensitive Stomach & Skin Chicken & Barley Recipe7.6
6. 06Purina Pro Plan Complete Essentials Adult Salmon & Rice7.6
7. 07Royal Canin Large Breed Adult7.5
8. 08Hill's Science Diet Adult Indoor Chicken Recipe7.4
9. 09Purina Pro Plan Complete Essentials Adult Chicken & Rice Formula7.4
10. 10Purina Pro Plan Complete Essentials Shredded Blend Adult Chicken & Rice7.4
11. 11Purina Pro Plan Veterinary Diets UR Urinary St/Ox Feline7.2
12. 12Royal Canin Veterinary Diet Gastrointestinal Fiber Response Feline7.2
13. 13Royal Canin Veterinary Diet Urinary SO Feline7.2
14. 14Royal Canin Medium Adult Dry Dog Food7.1
15. 15Purina Pro Plan Bright Mind Adult 7+ Chicken & Rice7.0
16. 16Royal Canin Small Adult Dry Dog Food7.0
17. 17Hill's Science Diet Perfect Weight Small & Mini Adult Chicken Recipe6.9
18. 18Hill's Science Diet Adult Healthy Cuisine Roasted Chicken Carrots & Spinach Stew6.8
19. 19Purina Pro Plan Sport Performance 30/20 Chicken & Rice6.5
20. 20Royal Canin Indoor Adult6.3
21. 21Royal Canin Veterinary Diet Hypoallergenic Hydrolyzed Protein Adult HP6.3
22. 22Royal Canin Veterinary Diet Urinary SO Adult6.2
23. 23Purina Pro Plan Veterinary Diets EN Gastroenteric6.0
24. 24Purina Pro Plan Chicken & Rice Entrée Adult Classic5.9
25. 25Purina Pro Plan Veterinary Diets HA Hydrolyzed5.9
26. 26Royal Canin Veterinary Diet Gastrointestinal Low Fat Adult5.9
27. 27Purina Pro Plan Veterinary Diets OM Overweight Management5.7

The trust score is doing real work

That trust gap is not an accident. Brand Trust counts for 25% of our composite, the second-heaviest weight in the rubric, so when it runs high it pulls the whole score up. For these three brands, trust scores cluster between 5.5 and 9.0, well above the field. Four concrete things earn them that:

• They own their factories.Hill’s, Royal Canin (Mars), and Purina make their food in their own plants. Most boutique brands hand production to a contract manufacturer, a co-packer. When a batch goes wrong, the line of accountability is shorter when the company owns the line itself, and that is worth something to you.
• They keep board-certified nutritionists on payroll. All three employ several full-time Diplomates of the American College of Veterinary Nutrition (DACVN), the specialist credential for formulating dog food. Most boutique brands lean on one consultant, often a general-practice vet, often part-time. More people whose job is the recipe means more eyes on what goes in the bag.
• They feed-test their recipes, not just calculate them. AAFCO lets a brand prove a food is adequate two ways: (a) show on paper that the recipe meets nutrient minimums, or (b) actually feed it to dogs under a controlled protocol and measure how they do. Path (b) costs more and proves more. Most recipes from these three brands take it. Most of the rest of the category takes path (a).
• Their recall history holds up. All three have had recalls. So has nearly every brand, so a clean-sounding record is rarely the real test. What matters is how often, why, how fast they recovered, and whether they told the public promptly. Across the last decade, these three average fewer recalls and quicker disclosure than the boutique tier.

Notice what the rubric is not doing: it never gives a point for the words vet-recommended on the bag. It credits the four signals above, which happen to be the very reasons vets reach for these brands in the first place.

Where they actually lose points

So why are none of them perfect? None of these brands score a 10, or even a 9. Most sit in the 6-8 band, right alongside the rest of the category. Two things keep them there, and both are things you feel directly.

1. You pay a premium.

The average Value sub-score across these 27 recipes is 3.5, and several Hill’s and Royal Canin SKUs land at a 4out of 10. That is not a glitch, and it is not us punishing a brand for being premium. It is simply what their price-per-calorie looks like next to what else is on the shelf. Hill’s and Royal Canin both run roughly two to three times the dollars-per-kilocalorie of a mid-tier kibble like Pedigree or Iams. If you are footing that bill every month, the Value score is telling you so.

Pro Plan fares better here. It rides on Purina’s wider distribution and volume pricing, so you generally pay less per calorie, and that advantage shows up cleanly in the numbers.

2. Some recipes are vaguer than others.

Not every recipe from these brands names what is really in it. Some Pro Plan SKUs lead with chicken by-product meal or a generic “poultry” instead of a named species, and some Hill’s formulas put whole-grain wheat and corn high on the list. To be clear, we do not dock points for by-products or grains by default (that is spelled out in our methodology). What we reward is specificity, telling you exactly which animal and which grain, and a few of these recipes simply tell you less.

You can watch this play out in the list above. The same brand can earn a 9.0 on ingredients in one recipe and a 5.8 in the next. So do not shop by the logo. The recipe is the thing that gets scored, and the recipe is what you are actually buying.

What this is and what this isn’t

Before you read this as a green light, a few caveats. This is not an endorsement of Hill’s, Royal Canin, or Pro Plan. Each comes with real tradeoffs, several of their recipes are middle-of-the-pack in our dataset, and there are smaller brands that beat them on the ingredient panel and on value at the same time.

It is also not a defense of the whole vet-recommendation machine. The words vet-recommended stamped on a bag are mostly marketing language we have written about elsewhere. The phrase on the front is not the same thing as the credentials behind it, and only one of those earns points here.

What this is, plainly: an honest read of what our rubric says about the three biggest vet-channel brands in the U.S. The rubric rewards owned manufacturing, in-house nutritionists, feeding-trial protocols, and clean recall records. It marks down high price-per-calorie and vague ingredient panels. These three brands collect the first set and pay the second, and the composite reflects both, faithfully.

What to do with this if you’re shopping

So where does that leave you at the shelf? If your dog is thriving on Hill’s, Royal Canin, or Pro Plan, you have no evidence-based reason to switch. You are paying for trust signals we can actually measure, and the bowl is doing its job. Stay put.

But if you are paying a Hill’s price for a recipe that scores a 4 on Value and a 7 on ingredient clarity, and you would like a similar nutrition and trust profile for less, that is a fair question, and it is exactly what the five sub-scores are built to answer. Click any product above and you will see the recipe broken down dimension by dimension, so you can find where you are over-paying and where you are not.

- The PetScored desk. Have one of these in mind already? If you want cheaper recipes with a comparable profile, we have scored Hill’s Science Diet alternatives, Purina Pro Plan alternatives, and Royal Canin alternatives. To see how two of them stack up directly, read the Hill’s vs Royal Canin head-to-head. Wondering whether Pro Plan is worth the step up from Purina ONE? We ran that one too. And if there is another brand you want us to score honestly, Tell us.