The short answer: Royal Canin Yorkshire Terrier Adult earns a C grade (58/100). Brewers rice and brown rice are the first two ingredients — two grains before any animal protein appears. Chicken by-product meal at position three is the sole animal protein in the top five, followed by chicken fat and wheat gluten. For a toy breed prone to dental disease and hypoglycemia, a formula loaded with grain-derived fillers and lacking whole meats is a questionable foundation.

What’s actually in Royal Canin Yorkshire Terrier?

We analyzed Royal Canin Breed Health Nutrition Yorkshire Terrier Adult dry dog food. The top five ingredients are brewers rice (a beer-brewing by-product), brown rice, chicken by-product meal, chicken fat, and wheat gluten. Corn gluten meal and corn also appear in the formula, meaning three separate grain-derived fillers — wheat gluten, corn gluten meal, and corn — pad out the ingredient list alongside the two rice varieties.

The breed-specific elements include a small, specially shaped kibble designed for a Yorkie’s tiny jaw, GLA safflower oil for coat health, L-tyrosine for skin pigmentation, and omega-3 fatty acids from fish oil. Yorkshire Terriers have one of the longest, most demanding coats of any breed, so these coat-focused additions are genuinely relevant — layered on top of a formula that’s fundamentally grains and by-products. Shop on Amazon →

The good stuff

GLA safflower oil is a standout inclusion for Yorkies. Gamma-linolenic acid supports the skin barrier and coat quality from the inside, which matters enormously for a breed whose floor-length silky coat is its defining feature. Fish oil provides EPA and DHA omega-3 fatty acids for additional coat luster and skin health. L-tyrosine supports skin pigmentation — a relevant addition for a breed whose coat color can fade.

Chelated minerals (zinc, manganese, copper proteinates) ensure better nutrient absorption in a tiny dog with a fast metabolism. Glucosamine and chondroitin support the joints and kneecaps in a breed highly susceptible to patellar luxation. Fructooligosaccharides serve as a prebiotic for the sensitive digestive system Yorkies are known for. Natural preservation with mixed tocopherols and rosemary extract avoids artificial preservatives like BHA/BHT.

The not-so-good stuff

Wheat gluten, corn gluten meal, and corn — three grain-derived fillers in a single formula. These are cheap protein boosters and binding agents that inflate the guaranteed analysis without delivering the amino acid profile of real animal protein. For a four-to-seven-pound dog that eats very little food per day, every bite needs to count, and grain fillers dilute the nutritional density.

Chicken by-product meal at position three is the only animal protein in the top five ingredients. By-product meal is a generic category — heads, feet, intestines — not the same as named chicken meal or whole chicken. Powdered cellulose (wood pulp) appears as a fiber filler with zero nutritional value. There are no whole meats anywhere in the formula, meaning your Yorkie never encounters actual chicken, beef, or fish — only processed meals and by-products.

How it compares

At C/58, Royal Canin Yorkshire Terrier outscores the standard Royal Canin (C/58) and ties the Royal Canin French Bulldog (C/58), but remains firmly average. The coat-support supplements give it a slight edge over the other breed-specific formulas, though the underlying grain-and-by-product pattern is identical across the line.

For Yorkshire Terriers specifically, Wellness Complete Health (B/82) delivers deboned chicken as the first ingredient with salmon oil for coat support — a dramatically better protein foundation for a small breed. Nutro (B/77) offers chicken, brown rice, and whole grains without the gluten fillers, plus omega fatty acids for coat health. Either option provides better base nutrition while addressing the same Yorkie-specific concerns.

For better alternatives — small-kibble, hypoglycemia-aware, dental-supporting — see our full best dog food for Yorkshire Terriers guide.

The bottom line

Royal Canin Yorkshire Terrier earns a C grade (58/100) from KibbleIQ. The GLA safflower oil, fish oil, L-tyrosine, and joint supplements are genuinely relevant for a breed with a demanding coat, fragile kneecaps, and sensitive digestion. But the formula builds those supplements on top of brewers rice, by-product meal, wheat gluten, corn gluten meal, and powdered cellulose — ingredients that don’t belong in a premium breed-specific food. Your Yorkie will get better nutrition from Wellness Complete Health (B/82) or Nutro (B/77) paired with a fish oil supplement for that famous silky coat. Shop on Amazon →