ROYAL CANIN Size Health Nutrition Giant Adult Dry Dog Food, 30-lb bag -

Royal Canin Size Health Nutrition Giant Adult Dry Dog Food, 30-lb bag

By Royal Canin
Rated 4.2952 out of 5 stars
$102.99Chewy Price
$97.84Autoship 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 shipping

About This Item


  • Specially formulated for extra-large breed dogs ages two years and older that weigh over 100 pounds.
  • Helps support bone and joint health with glucosamine, chondroitin, EPA and DHA.
  • Promotes cellular health with a vitality complex of antioxidants.
  • Supports your pal’s heart health with important nutrients like taurine.
  • Provides digestive support with easy-to-digest proteins and a balanced blend of fibers.

See More

Nutritional Information

Feeding Instructions


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

About Royal Canin Size Health Nutrition Dog Food

Nutrition for Every Breed Size

Different-sized dogs have very different needs, which can make finding the right nutrition complicated. That’s why Royal Canin addresses each size and life stage to cater to your dog’s nutritional needs. Their team is made up of veterinarians and nutritionists who develop formulas for dogs of varying sizes, taking every detail into consideration so your dog can be his most magnificent self.

Pet-First Philosophy

Royal Canin always puts the needs of pets first. That clear focus steers their research and underpins the quality of the nutrition. Every Royal Canin formula is developed by veterinarians and nutritional experts and tested at one of their research facilities. Each step helps their team ensure an ideal formula for your pet. Nutritional quality and product safety are at the heart of their operations. With more than 500,000 completed analyses on raw materials and finished products per year, Royal Canin never compromises on providing your pet with effective and precise nutrition.<

About Royal Canin

Since 1968, Royal Canin has been at the forefront of pet health nutrition. Their obsession with detail is what makes it possible to deliver precise, effective nutrition for a variety of breeds, sizes, lifestyles and health needs. It’s how they’re making a better world for pets and helping them become their magnificent best.
Shop Royal Canin

Questions & Answers

18 Customer Questions

About how many cups are in a 35lb bag?
Answer by ChewyDec 30, 2017
There are approximately 4 cups per pound of kibble. A 35 pound bag will have close to 140 cups.

What is the calcium and phosphorous level?
Answer by ChewyFeb 19, 2018
This product contains 1% Calcium and 0.7% Phosphorus on an as fed basis.

is this kibble smaller than the great dane formula?
Answer by ChewyApr 26, 2019
The kibble is approximately the same size as the kibble in the Royal Canin Great Dane Adult Dry Dog Food.

What is the Vitamin E %?
Answer by ChewyOct 07, 2020
The Giant Adult recipe contains 500 IU/KG of Vitamin E.

ReviewsWrite a Review

Rated 4.2952 out of 5 stars
166 Ratings
Would recommend to a friend

166 Customer Reviews

Rated 5 out of 5 stars
By berk5 on Apr 22, 2023

Price Increase

We’ve been using this dog food for our mastiff mix and Saint Bernard for several months. My Saint is a very picky eater and loves this food. I appreciate the giant kibble because it forces them to eat slow. I’m very upset about the increase in price and the decrease in amount… it was already expensive but with the 2 giant breeds eating this food I don’t think I can justify it anymore..

Rated 5 out of 5 stars
By Mastiffs on Apr 1, 2023

The dogs LOVE this

Finally, mastiff-size food! No more kibbles dropped all over the floor. Something they can comfortably chew. And they love the food. They are always happy to eat but this is the first time they have eagerly rushed to the kitchen at mealtime, actually excited for dinner. Excellent giant breed food, highly recommend it.

Rated 3 out of 5 stars
By TropicalTundra on Mar 30, 2023


Royal Canin spiked the price of this dog food in 14% by reducing the size of the package from 35lbs to 30lbs. I wish brands owned up their prices, instead of trying to fool consumers. It is common dirty practice and insulting. Kibbles are huge, hence giant dog, my Great Pyrenees is picky and is not a food driven dog. I usually go between this Royal Canin Giant Breeds and Hills Science Diet for large breeds. He seems to like both (without enthusiasm). He is only 3 years old, healthy and in perfect weight for his breed/age. I am glad Royal Canin made a product dedicated to extra large pups, they have different needs and aging is harder on them. I wish other brands would do the same. The downside is the super expensive price.

Rated 3 out of 5 stars
By dippind on Apr 20, 2023

So disappointed!!!

I was very disappointed to find that the food that I use was unavailable. I was even more disappointed to find that once it was back in stock that the bags had gone from 35lbs to 30lbs yet the cost was the same.

Rated 3 out of 5 stars
By kristin44444 on Apr 10, 2023

good food, disappointing company

Retailer reduced the size of the bag by 4 lbs and didn’t reduce the price, then within a month raised the price $14. Disappointing tactics from a formerly well respected brand.

Rated 5 out of 5 stars
By Freyasmom on Feb 4, 2023

great big dog food

My Saint Benard loves this food and its big pieces so she eats it easier and she’s not making a mess like with the small kibble. Her fur is healthier. Most importantly she loves it!

Rated 5 out of 5 stars
By Mike on Nov 14, 2022

Worth the money

Using the age appropriate food since he was 6 weeks old has allowed him to grow into a very healthy dog. Beautiful coat, healthy, and full of energy. He is at the very tip of the high side size wise for his breed. Of course genetics are the main reason, but I and his vet (who recommended) are convinced Royal Canin enhanced all of it.

Rated 5 out of 5 stars
By T4omTexas on Dec 27, 2022

My dogs love this dog food

I have two very picky rotties and they aren't affrade to turn their nose up to dog foods no matter how expensive but this dog food is amazing.

Rated 4 out of 5 stars
By Meowster on Sep 13, 2022

Charcoal briquette sized kibble

This food is the quality you’d expect from RC. Dogs love the taste, especially when you follow the bags directions and add water to the food. The only downside is that my giant 160 lb. Newfoundland takes a little coaxing to get him to eat the MASSIVE kibble. It’s literally the size of grilling charcoal pieces. Because of the massive kibble, which causes him to pull each piece out at a time, the floor is littered with little crumbs of dog food whereas the giant junior kibble size was perfect for his giant mouth and left little to no mess. It’s probably just unique to him though... Another possible issue is measuring in cups with the large pieces. For accuracy in feeding, I’d recommend weighing the food out.

Rated 1 out of 5 stars
By Gentlegiant34 on Nov 3, 2022

Gives dog diarrhea

I've tried switching my Saint to this after he turned 18 months however it does not agree with his stomach. Have tried it 4 times and everytime he eats this it gives him the runs.