Diamond Naturals Large Breed Adult Lamb Meal & Rice Formula Dry Dog Food

By Diamond
Rated 3.9871 out of 5 stars


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$93.98Chewy Price
$89.28Autoship Price
(Save an extra 5%)

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About This Item


  • Made in the USA by a family-owned company using quality ingredients from trusted domestic and global sources.
  • With real pasture-raised lamb protein as the #1 ingredient, this recipe is specially formulated to support the needs of large breed dogs.
  • Contains proper nutrient levels needed for large breed dogs and provides the energy to thrive. This kibble also contains omega fatty acids for skin and coat health and delivers vitamins and minerals from superfoods, including fruits like blueberries and oranges.
  • Each serving includes species-specific K9 strain proprietary probiotics, plus antioxidants and prebiotics to help support healthy digestion, immune system health and overall wellness.
  • Made without corn, wheat, artificial flavors or colors.

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Nutritional Information

Feeding Instructions

Play Video: Learn More About Diamond From Our Team of Experts
Learn More About Diamond From Our Team of Experts

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About Diamond Pet Food

Headquartered in Missouri, family-owned Diamond Pet Food believes that every pet deserves the best food possible, and they've been delivering on that promise since 1970. They use state-of-the-art facilities across the USA to create quality cat and dog food made to the highest nutritional standards. Every formula balances protein, fat and essential nutrients to keep your pets active and healthy and performing their best.

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Top IngredientsLamb Meal, Whole Grain Brown Rice, Cracked Pearled Barley...Lamb Meal, Ground White Rice, Cracked Pearled Barley...Beef Meal, Grain Sorghum, Ground White Rice...Chicken, Chicken Meal, Whole Grain Brown Rice...New: Beef Meal, Brown Rice, Peas...
Health FeatureDigestive Health, Immune Support, Skin & Coat HealthDigestive Health, Immune Support, Skin & Coat HealthDigestive Health, Immune Support, Skin & Coat HealthDigestive Health, Immune Support, Skin & Coat Health
Special DietNo Corn No Wheat No Soy, With GrainNo Corn No Wheat No Soy, With GrainNo Corn No Wheat No Soy, With GrainNo Corn No Wheat No Soy, With GrainNo Corn No Wheat No Soy, With Grain
Breed SizeLarge Breeds, Giant BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsLarge Breeds, Giant BreedsSmall Breeds, Medium Breeds, Large Breeds, All Breeds
Food FlavorMeat, LambMeat, LambMeat, BeefPoultry, ChickenMeat, Beef
Food FormDry FoodDry FoodDry FoodDry FoodDry Food

Questions & Answers

30 Customer Questions

Would this be a good food for German Shepard’s and good for their hips and joints?
Answer by ChewyMay 26, 2018
This food is suitable for all large breed dogs, including a German Shepherd, and contains guaranteed levels of Glucosamine and Chondroitin to support joint health.

Where is it made
Answer by ChewyMar 30, 2019
This food is made in the United States.

How many cups of food are in the 40lb bags?
Answer by ChewyFeb 05, 2018
There's approximately 160 cups of food in the 40 pound bag.

If I’m switching my dog from Diamond Naturals Large Breed Puppy Lamb & Rice to this food, should I mix it as if it’s a new food, or can I just switch?
Answer by ChewyOct 24, 2021
We recommend at least a 7 - 10 day transition before you begin feeding the new formula exclusively. Start by mixing 75% of the old diet with 25% of the new diet on Day 1 and Day 2. On Day 3 and Day 4, mix 50% of the old diet with 50% of the new diet. On Day 5 and Day 6, mix 25% of the old diet with 75% of the new diet. On the 7th day, you can feed the new formula exclusively. This allows your pet’s digestive system to smoothly adapt to the new food.

ReviewsWrite a Review

Rated 3.9871 out of 5 stars
389 Ratings
Would recommend to a friend

379 Customer Reviews

Rated 1 out of 5 stars
By Kiersten on Nov 10, 2023

Listen to the bad reviews!!

I heard really good things about this food from online Great Dane groups, but then I saw all of the bad reviews about how the formula must have changed because their dogs were getting sick. I thought it was possible that people just got bad bags and that they wouldn’t all be like that. Boy was I wrong. At first when mixing the food in with the old food, my dogs went crazy for it and they were eating it all up with no problems, but once I weened them off their old food and fed them only this food, that’s when the problems started. I noticed they stopped eating as much as they were when it was mixed with the old food and that my mutt baby had really bad gas. Then I walked outside and noticed all the diarrhea from both my mutt and my Great Dane. I thought it was possible I didn’t ween them off slow enough and that they were still adjusting to it, but it’s been a little bit now and there has been no change. Luckily, we haven’t experience the vomiting but I saw that could possibly happen as well. From the beginning I noticed a rancid smell and just assumed that it didn’t matter. Now I’m wondering if the food is spoiled… but every bag? Don’t risk it like I did. I am going to be returning to Purina until I can find a better solution.

Rated 4 out of 5 stars
By Anita on Nov 26, 2023

Shipping advice only - NO LOSS, NO CREDIT NEEDED

Shipping Advice only: When shipped with knuckle or femur bones, separate dog food bag from bones with thin cardboard. Due to rough handling by delivery people, the bones broke the plastic bag in several places causing ONLY INCONVENIENCE, NO LOSS. NO CREDIT REQUESTED OR DESIRED.

Rated 1 out of 5 stars
By Lynn on Oct 2, 2023

It’s not my dog, it’s the food!

I’ve been feeding my dog Diamond Naturals Large Breed Lamb Meal and Rice for over a year and a half. He has always enjoyed eating, that is until the last bag of food I bought. He refuses to eat. For the last couple of weeks he has not eaten more than a few mouthfuls a day. I thought he was just being difficult. I see now it’s the food that’s the problem. What I thought was him being a picky eater, may have saved him from having adverse reactions to his food. Like so many other dog owners, I had thought Diamond was a decent food, but now I have my doubts. So come morning I will be on the hunt for a food he will enjoy and will be better for him. The sad fact is so many dry foods are having customer reviews about problems. The cost goes up and the quality seems to not be what it was. I’ll spend whatever I have to for my dog to eat a better food. It will be less expensive than feeding something that will cause him to be sick and require vet visits. It’s a shame it’s this way, but nothing is worth forcing him to eat something he is avoiding at all cost.

Rated 1 out of 5 stars
By Kelli on Sep 30, 2023

They Changed Something

My dog has suddenly been having major allergy flare ups that I have not seen since I realized she is allergic to chicken. I narrowed it down to the point I knew it had to be the food although there was nothing put out by the company that the formula was changed. After reading all of the most recent reviews of dog owners having the same issues with their dogs, I most definitely have switched my Great Danes food. Also, after speaking to my veterinarian about it, many dog food companies have tried to cut costs and have lessened their protocols in clean the processing equipment between batches of food so if they processed chicken and then started on the lamb and rice, it is cross-contaminated. I can’t say definitively whether it is cross contamination or a changed formula, either way something has changed and my dog is reacting poorly to this food. She has lost her appetitive for this food and becomes itchy and has begun to lose her coat and become dry and flaky due to allergy flare up.

Rated 5 out of 5 stars
By Jennifer on Nov 2, 2023

Diamond Naturals

We have fed our dogs the same food for more than 10 years. Recently, it just stopped agreeing with their digestive systems so we decided to change to Diamond Naturals. My dogs LOVE this food. They all are eating it and seem to have no problems digesting it. They seem to enjoy the taste as well. So glad we happened upon this and will continue to use it!

Rated 2 out of 5 stars
By Bethany on Oct 28, 2023

Formula Change *HAS CHICKEN FAT

We used to love this food but it now contains chicken fat and that isn’t going to work for our chicken sensitive Great Bernese. A bag change or something would have been nice, why put chicken in the lamb recipe? Otherwise we did previously love it and would recommended it if your dog doesn’t have an issue with chicken.

Rated 5 out of 5 stars
By James on Nov 25, 2023

Dogs like it, so I guess it’s good

As I stated, dogs wolves It down. I have it on automatic ship,saves money,comes right to my door,don’t have to leave the house. It’s easy to change the ship date. Plus Diamond dog food is a local product.

Rated 1 out of 5 stars
By JennG on Sep 10, 2023

Not good

I noticed my dogs weren't thrilled with their kibble and had been having nasty side effects, which I blamed on a different source while completely overlooking that we had started this new bag (had been getting them the chicken variety prior to this). I had 2 GSDs on it, one started balding, the other vomiting and bloody diarrhea. Upon reading other 1 star reviews it dawned on me I was blaming the wrong source. I am immediately stopping all kibble (reading 1 star reviews on other brands read like they do on this one) and taking the money saved and putting them on raw full time. (We get the meat from a local farmer, so we know that source at least.) Just be cautious if you try this kibble.

Rated 1 out of 5 stars
By Sad on Oct 1, 2023


Had to transfer my dog over to this food because his original food that he’s been using a long time was out of stock for way too long. Introduced this to him a little at a time because I was tired of waiting for the other one to come back in stock and couldn’t locate it anywhere. it did not agree with his stomach at either end and ended up with a very large vet bill to make him feel better. Not happy

Rated 1 out of 5 stars
By Emily on Oct 1, 2023

Change to formula?

We’ve used Diamond Naturals dog food with our dogs for many years with no problems. Unfortunately the last two bags seem to be causing stomach issues in both dogs-didn’t think much of it till I saw other reviews mentioning the vomiting/diarrhea as well. The scent of the food also seems to be different/stronger, even though it’s the same formula. Fearing that some ingredients have changed?