BONE AND JOINT HEALTH: Glucosamine, chondroitin, and EPA & DHA help support bone and joint health

VITALITY SUPPORT: An exclusive vitality complex of antioxidants for dogs promotes cellular health

HEART HEALTH: Nutrients, including taurine, support heart health

HEALTHY DIGESTION: Easy-to-digest proteins and a balanced blend of fibers provides digestive support

With a big heart and playful energy, your gentle giant has it all… shouldn’t their nutrition? Extra-large dogs put a lot of daily stress on their joints due to their sheer size and can benefit from a formula that supports digestive health. These giant breed dogs need a size-specific formula to help them live a long, happy life.

Royal Canin Giant Adult dry dog food is tailored to support your dog’s commanding presence and lifestyle. This giant-breed formula contains glucosamine, chondroitin, and EPA/DHA to help keep bones and joints healthy and strong. An exclusive complex of antioxidants supports cellular health. Heart-healthy nutrients like taurine help keep big hearts healthy. High-quality proteins and a blend of fermentable and non-fermentable fibers help support optimal digestive health. Plus, the extra-large kibble encourages chewing, so big dogs can properly digest their food. Add some variety to their bowl with Royal Canin Adult wet dog food.

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Labrador Retriever adult sitting with its owner outdoors

Chicken by-product meal, brewers rice, chicken fat, brown rice, corn gluten meal, wheat, natural flavors, dried plain beet pulp, pea fiber, wheat gluten, fish oil, vegetable oil, potassium chloride, calcium carbonate, salt, choline chloride, vitamins [DL-alpha tocopherol acetate (source of vitamin E), L-ascorbyl-2-polyphosphate (source of vitamin C), biotin, D-calcium pantothenate, vitamin A acetate, pyridoxine hydrochloride (vitamin B6), niacin supplement, folic acid, thiamine mononitrate (vitamin B1), vitamin B12 supplement, riboflavin supplement, vitamin D3 supplement], trace minerals [zinc proteinate, manganese proteinate, zinc oxide, ferrous sulfate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinate], taurine, glucosamine hydrochloride, GLA safflower oil, marigold extract (Tagetes erecta L.), magnesium oxide, L-carnitine, chondroitin sulfate, rosemary extract, preserved with mixed tocopherols and citric acid.

Calorie Content

This diet contains 3958 kilocalories of metabolizable energy (ME) per kilogram or 427 kilocalories ME per cup on an as fed basis (calculated).

Nutrient Amount
Crude Protein (min)26.0%
Crude Fat (min)18.0%
Crude Fiber (max)3.9%
Moisture (max)10.0%
Taurine* (min)0.14%
Glucosamine* (min)446 mg/kg
Chondroitin sulfate* (min)4 mg/kg.

*Not recognized as an essential nutrient by the AAFCO Dog Food Nutrient Profiles.

Weight Low Activity Medium Activity High Activity
99.2 lb (45 kg) 3 5/8 cups (396 g) 4 1/4 cups (459 g) 4 7/8 cups (521 g)
121.3 lb (55 kg) 4 1/4 cups (461 g) 4 7/8 cups (533 g) 5 5/8 cups (606 g)
132.3 lb (60 kg) 4 1/2 cups (492 g) 5 1/4 cups (569 g) 6 cups (647 g)
143.3 lb (65 kg) 4 7/8 cups (522 g) 5 5/8 cups (604 g) 6 3/8 cups (687 g)
165.3 lb (75 kg) 5 3/8 cups (581 g) 6 1/4 cups (673 g) 7 1/8 cups (765 g)
187.4 lb (85 kg) 5 7/8 cups (638 g) 6 7/8 cups (739 g) 7 3/4 cups (840 g)
220.5 lb (100 kg) 6 5/8 cups (721 g) 7 3/4 cups (835 g) 8 3/4 cups (949 g)
Giant Adult Dry Dog Food

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Customer reviews

24 Feb 2022

Great food but frequently Hard to Find

My Bull Mastiff loves the food but it is expensive and frequently hard to find.
27 Jan 2022

Amazing for Neapolitans

Ever since I brought my Neapolitan home as a puppy I have fed her Royal Canin, and I have to say, the formulas are the best I've found. The kibble size is spectacular for Neapolitans who have a lot of dewlap to work with. It makes it so easy for my girl to pick up and eat and she loves it! She is also a show dog and breeding dog and Royal Canin makes her look absolutely spectacular. I can only hope they make the giant starter available! If not, I'll use the maxi when my girl is bred.
04 Feb 2021

We LOVE this brand!

We have 2 adult Great Danes, both 3 Years old. We started them off with a recommended large breed puppy food that was not Royal Canin, but they had so much stomach upset that we asked our vet what to do. The blood work and stool check showed no intestinal parasites, so the vet recommended that we look at the food that we were feeding. We went online and looked at the ingredients in many dog food brands and came across Bil Jac. We went with Bil Jac large breed puppy for a short time, but were not satisfied with the results. The Danes still had stomach upset and their coats were dull. Furthermore, the kibble was like rabbit food and hard for them to chew because of the size. We then looked at Royal Canin and saw that they have breed specific formulas and the contents were just what our vet recommended. So we began with the "Giant Breed Puppy" Formula. When our girl became pregnant we switched her over to the "HT 42d" Large Breed, which is for breeding females from the 1st day of heat to the 42nd day of gestation. We then switched her to "Starter Maxi Mother and Babydog" formula which is for Mother from the end of gestation until the end of lactation and puppies from 3 or 4 weeks to 8 weeks of age. Both mom and puppies loved this formula and did extremely well with it. Our veterinarian stated that they were the strongest and best looking puppies that he had seen. We kept mom and dad both on "Giant Breed Puppy" for 18 months as recommended by our vet. Following they both went on "Giant Junior" for another year and finally on to "Giant Breed Adult" We are so pleased with their weight, coat and stool formation. Neither have presented any health concerns and the vet stated that is due to good care and nutrition. So thank you Royal Canin for being a big part of good care for our babies.
30 Oct 2019

Great texture and taste they've it

We continue to use this product keeps the Shepards active and healthy coats.
30 Oct 2019

Great Food

My dogs love the food--and it has wonderful ratings for its health benefits
23 Oct 2019


I have been buying this for 1 year now and the positive effects on my dog was visible from the first week. My favourite part is the size of the pellets. Buddy gets to actually chew his food.
Slobber dog
23 Oct 2019

Large kibble!

I absolutely love this food! Finally a kibble size for giant dogs! My boys no longer inhale their food and with RC we know we are feeding the best to our boys! Thank you! I only wish the prescription diet my other giant needs would come in a larger kibble size :)
Royal Canin response
Great feedback and suggestion, thank you!
Tonya 3051
22 Oct 2019

Great results with coat, healthy and bright active

Tonya 3051
22 Oct 2019

Great results with coat, healthy and bright active

22 Oct 2019

Huge Kibble Size

My African Boerboel Mastiff had a hard time with previous "large" kibble, it would fall out of his mouth and was a mess, this is a perfect size, his coat and weight are great!