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Royal Canin vs Hill's Science Diet

A score-by-score comparison of Royal Canin and Hill's Science Diet — value, ingredients and transparency — run through the same independent 100-point methodology.

Reviewed by the PetReviews editorial team

Independent scoring · Updated June 2026 · Not veterinary advice

Royal Canin dog food
Higher overall

Royal Canin

Mars Petcare

The vet-clinic heavyweight, and the clinical research genuinely is best-in-class. But the everyday ingredient panels don't match the price: they lean on by-product meals, corn and grain rather than named single-source protein, and you're paying a high price per kg for the brand's vet-clinic shelf presence and breed-specific marketing as much as for what's in the bag. The therapeutic lines earn their keep; the standard ranges are expensive for the ingredient quality.

Super-premiumVet-prescribed therapeutic feedingGenuine condition-specific needs
Read the full Royal Canin review →
Hill's Science Diet dog food

Hill's Science Diet

Hill's Pet Nutrition (Colgate-Palmolive)

A science-led brand with a deep, well-researched prescription range — clinically rigorous and consistent. Outside the therapeutic lines, though, the value is below average for the price: the standard panels lean on corn, grain and by-product meals rather than named single-source protein, and you carry a vet-clinic price premium for the brand and its shelf presence. The prescription range is the reason to buy it, not the everyday food.

Super-premiumVet-prescribed therapeutic dietsGenuine condition-specific feeding
Read the full Hill's Science Diet review →
The scorecard

Score by score

Both brands run through the same six-part model. Higher is better on every dimension; the forest dot marks the leader on each row.

MetricRoyal CaninHill's Science Diet
Overall score6866
Price & value5452
Ingredient quality6057
Nutrition7877
Transparency6667
Availability8077
Customer sentiment7067
Price tierSuper-premiumSuper-premium
Cheapest per kg$10.60/kg$11.58/kg
Made inFrance / MultipleUSA / Multiple
Who leads where

The verdict, by category

Best value

Royal Canin

Lower cost per day for similar quality.

Best ingredients

Royal Canin

Named-meat-first and protein quality.

Most transparent

Hill's Science Diet

Ingredient, ownership and origin clarity.

68/ 100
Average
Editorial assessment

Our verdict

On our index, Royal Canin comes out ahead overall (68 vs 66). But the right choice depends on your dog: Royal Canin leads on value, while Royal Canin leads on ingredients. Compare cost per day and the cheapest retailer for each before you buy.

Not veterinary advice. Average vs Average overall. Prices are illustrative and manually entered for v1 — always confirm live pricing with the retailer.

Other brands worth comparing

Black Hawk dog food pack

Black Hawk

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76Good

Fine on a discounted big bag if you choose a named-meat-first recipe, but don't assume the whole range is equal — the cheaper lines pad the panel with grain and rice, and a chunk of the price is reach and marketing rather than ingredients. Compare the specific formula on cost per kg against SavourLife and Ivory Coat.

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Prime100 dog food pack

Prime100

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78Good

A capable single-protein option for elimination diets, and the labels are honest. But the rolls especially carry a steep price per kg for what is a deliberately simple recipe, and the range spread across formats muddies value — price the dry against the rolls per serve before you settle on one.

Sensitive stomachsAllergy/elimination diets
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Frequently asked questions

On our value score, Royal Canin edges ahead (54 vs 52). Value is about cost per day, not sticker price — compare the per-kg figures above and the cheapest retailer for each before deciding.

Royal Canin scores higher on ingredient quality (60 vs 57) in our index. We look at named-meat-first, protein source quality, wholefoods and fillers.

Hill's Science Diet scores higher on transparency. Transparency covers ingredient clarity, country of manufacture, ownership and feeding-guide detail.

Online-only retailers like Pet Circle and Budget Pet Products are usually the price-to-beat on everyday pricing, while Petbarn is a strong all-rounder with the widest range, stores nationwide and competitive member and Repeat Delivery pricing. Whichever you choose, compare price per kg before buying.

No. PetReviews is an independent value and comparison resource, not veterinary advice. Prices are illustrative and manually entered for v1 — always confirm the live price and speak to your vet before changing your dog's diet.

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