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

By Diamond
Rated 3.9917 out of 5 stars


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$46.99Chewy Price
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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

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...New: Beef Meal, Brown Rice, Peas...Chicken Meal, Chicken, Ground White Rice...Lamb (Source of Glucosamine), Rice Flour, Whole Grain Corn...
Health FeatureDigestive Health, Immune Support, Skin & Coat HealthDigestive Health, Immune Support, Skin & Coat HealthDigestive Health, Immune Support, Skin & Coat HealthDental & Breath Care, Digestive Health, Heart Care...
Special DietNo Corn No Wheat No Soy, With GrainNo Corn No Wheat No Soy, With GrainNo Corn No Wheat No Soy, With GrainHigh-Protein, No Corn No Wheat No Soy, With GrainHigh-Protein, Natural, With Grain
Breed SizeLarge Breeds, Giant BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All Breeds
Food FlavorMeat, LambMeat, LambMeat, BeefPoultry, ChickenMeat, Lamb
Food FormDry FoodDry FoodDry FoodDry FoodDry Food

Questions & Answers

29 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 3.9917 out of 5 stars
361 Ratings
Would recommend to a friend

361 Customer Reviews

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 1225 on Aug 21, 2023

not the same quality

Been feeding our large breed dogs Diamond brand for many years. Dogs always thrived and stayed healthy. Not sure what has changed but we can no longer feed this brand. We would rather pay a little more for a dog food that doesn’t make our dogs sick. After reading other reviews we have now concluded that this food is the reason our dogs have loose gassy stools and sometimes diarrhea. So glad I read about others having the same issues with this food. Our Mastiff has also has excessive hair loss this year. Hope Diamond figures out the problem. Do better Diamond!

Rated 5 out of 5 stars
By Levi on Jul 26, 2023

Angela is the best! Perfect customer service

I had to call Chewy with several issues this morning. I spoke with Angela, who solved about five problems for me. She solved problems that I didn’t even know I had with a patient, friendly manner. She stuck with me on the phone for half an hour. Her computer had problems, but she kept trying and even went to her supervisor to get help to help me better. She is incredibly good at her job, in all ways. She’s efficient and she knows her job. She really went out of her way to take care of me. I appreciate her so much! Mrs. Lydena Wyatt And my two Great Danes

Rated 2 out of 5 stars
By DixieDane on Jul 18, 2023

Not Like It Used To Be

We started our Great Dane on this food approximately a year ago. She was doing really well with it. We were so happy we found a food that she liked. About July 2023, she started to have really bad gas and stomach problems. Not sure what was changed but we had to go to another food. Really disappointed that the company would do something that affects so many dogs. Wish Chewy would look into this.

Rated 1 out of 5 stars
By Momof2 on Jul 29, 2023

So Disappointed

We normally have good luck with Diamond brand dog food, but not this time. We have to put every cup of food in a strainer because it's full of powdered dog food. Looks like we got the bottom of the barrel with this bag and I won't be buying it again. The whole bag is full like this and it's going in the trash.

Rated 1 out of 5 stars
By MB on Aug 1, 2023

This food is making our dogs sick. Our dogs have been having diarrhea with blood and been vomiting. We’ve been buying this food for years and never had a problem. I’ve read other newer reviews and people are having the same issues with this food. Something has change for sure.

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

Poisoning my dogs

I have bought two types of dog food that's not chicken and then the food ends up having chicken in it. My dogs are allergic this hurts them badly..

Rated 1 out of 5 stars
By DogDad on Jun 9, 2023

Avoid This Food Right Now!

Listen to the other reviews and please avoid this food right now. It is making several dogs sick. We started our Great Dane on this food about a year and a half ago, and it was the absolute best thing we've found that works for him. However, we bought a bag towards the end of May 2023, and it made him severely sick. He was vomiting during the day and woke us up at least 4 times during the middle of the night with diarrhea, every night for a week straight. We own other dogs so we let him have their food for a day or so, and he seemed to get better. We made the mistake of giving him this one again, not realizing it was the food and after 2 feedings he was just as sick again. Let me tell you, a sick Great Dane IS NOT FUN. With that said, Chewy is literally the best place to order pet supplies. They listened to our concern and helped us out literally within 15 minutes of messaging them.

Rated 1 out of 5 stars
By wiemdaddy71 on Jul 29, 2023

Caused bad uti and sick

Notice bad reaction in stomach and uti that hadn't seen in 3 yrs.Not happy with the change since been using for many years. Definitely know its changed ingredients and source

Rated 3 out of 5 stars
By Alexis on Jun 1, 2023

Making dog sick

I’m not sure what they have changed but this used to be the best food for our Great Dane. The last bag we bought destroyed his stomach he has had horrible diarrhea and gas. I wish they wouldn’t have messed with the ingredients and if they didn’t this food needs to be recalled.