Diamond Premium Adult Formula Dry Dog Food

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40-lb bag
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Give your furry friend the precious gift of premium nutrition with Diamond Premium Adult Formula Dry Dog Food. Formulated from the highest quality ingredients, this food is made to make a difference with carefully determined levels of protein, fat and other vital nutrients to support your paw-thletic pooch’s ideal body condition. Essential minerals are chelated with amino acids to optimize their absorption and ensure maximum benefit. It’s also fortified with antioxidants and fiber for digestive and immune system support to help make sure your best friend gets all the nutrients she needs to maintain stamina and energy, day after day.

Key Benefits

  • Formulated with carefully determined levels of protein, fat and other vital nutrients for strong muscles, as well as stamina and energy for active, hardworking dogs.
  • Chelated minerals help ensure maximum absorption of vital nutrients; powerful antioxidants including selenium and vitamin E help support his immune system and overall health.
  • Chicken fat, along with fish meal and flaxseed, provide support for healthy skin, a shiny coat and overall well-being.
  • Complete and balanced nutrition is formulated with essential vitamins and nutrients, along with dried beet pulp for healthy digestion.
  • Manufactured under rigorous production standards in Diamond’s state-of-the-art U.S. facilities using the highest quality ingredients.

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  • Item Number
  • Weight
    40.0 pounds
  • Breed Size
    All Breeds, Small Breeds, Medium Breeds, Large Breeds
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States

Nutritional Info


Chicken By-Product Meal, Whole Grain Ground Corn, Wheat Flour, Chicken Fat (Preserved with Mixed Tocopherols), Brewers Rice, Dried Beet Pulp, Egg Product, Flaxseed, Natural Chicken Flavor, Fish Meal, Potassium Chloride, Salt, Choline Chloride, Vitamin E Supplement, Iron Proteinate, Zinc Proteinate, Copper Proteinate, Ferrous Sulfate, Zinc Sulfate, Copper Sulfate, Potassium Iodide, Thiamine Mononitrate, Manganese Proteinate, Manganous Oxide, Ascorbic Acid, Vitamin A Supplement, Biotin, Niacin, Calcium Pantothenate, Manganese Sulfate, Sodium Selenite, Pyridoxine Hydrochloride (Vitamin B6), Vitamin B12 Supplement, Riboflavin, Vitamin D Supplement, Folic Acid.

Caloric Content

4,310 kcal/kg, 435 kcal/cup

Guaranteed Analysis
Crude Protein 26.0% min
Crude Fat 18.0% min
Crude Fiber 3.0% max
Moisture 10.0% max
Docosahexaenoic Acid (DHA) 0.05% min
Calcium 1.0% min
Phosphorus 0.8% min
Zinc 150 mg/kg min
Selenium 0.35 mg/kg min
Vitamin E 150 IU/kg min
Omega 6 Fatty Acids 3.0% min
Omega 3 Fatty Acids 0.5% min

Feeding Instructions

Transition Instructions

When transitioning your pet to a new food, we recommend a gradual introduction of the new formula over a 7 day period. For pets with sensitivities, extend the transition period to 10 to 14 days. Start by adding a small amount of your pet’s new food to his or her current food. Gradually, increase the new food amount and decrease the current food amount at each feeding until you are feeding only the new food.

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Food That Makes a Difference

Diamond believes that every animal deserves premium nutrition, and that's the philosophy they used to develop their dog kibble. They've packed healthy ingredients that are full of the protein, antioxidants, fiber and vitamins your pet needs to stay active, into all of their delicious recipes. These formulas help maintain ideal body condition and provide dependable support for better digestion and a strong immune system.

Food That Makes a Difference
Designed for Daily Performance

Designed for Daily Performance

No matter how old or active your pup is, Diamond has a perfectly balanced formula to keep her running and playing with the rest of the pack. Nutrient levels are carefully determined to make sure your canine friend gets the right amount of protein, fat, omegas, vitamins and minerals, ensuring the best performance possible.

PUPPY FORMULA: Enhanced with DHA for growing puppies; ideal for pregnant or nursing adult dogs

MAINTENANCE: Promotes healthy body condition for moderately active dogs

PREMIUM: Specially formulated for active canines such as working, show, hunting and breeding dogs

PERFORMANCE: Helps maintain strength and increase stamina in hardworking canine athletes

Beneficial Nutrients



from fish meal and flaxseed promote healthy skin and coats that shine.

Glucosamine and chondroitin

Glucosamine and chondroitin

in guaranteed levels help support joints and cartilage.

Vitamins and minerals

Vitamins and minerals

in every formula help keep your pet feeling her best.



like selenium and vitamin E give the immune system the support it needs.



from dried beet pulp helps promote good digestion and overall well-being.

Ensuring Quality at Every Step

Diamond manufactures their pet foods in their own state-of-the-art US facilities using the latest technology and manufacturing processes. They make sure everything is perfect, right down to the purified water they use to cook with. Care and quality go in, and what comes out is a nutritious food that satisfies hungry appetites.

Ensuring Quality at Every Step

Compare Diamond Dry Food Lines







PROTEIN 31% 22% 26% 30%
FAT 20% 12% 18% 20%
438 330 435 448

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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About Diamond Pet Food

Customer Reviews

13 reviews 13 Reviews 4.4 out of 5 Stars

92% Recommend

92% of reviewersrecommend this product

4.4 / 5

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  • Dogs love it, but size and delivery could be better

    By on

    Would like larger bags as my two large dogs go through it quickly. Would also appreciate it if the delivery guy would put it on my porch instead of leaving it in the driveway.

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  • Great food wonderful value.

    By on

    Wonderful nutrition at an affordable price. My dogs love this food. They have nice coats and maintain great health for years with this brand. Used it for over 10 years.

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  • Diamond premium adult dog food

    By on

    My dog really likes this food.and it keep him happy full of energy and looking great keeps his teeth clean keep him a very happy dog

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  • Quality

    By on

    I like Diamond for my dogs, it's a quality food. My dogs are farm dogs and I give them this higher protein one for winter and choose maintenance for summer!

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  • Great product at great price

    By on

    My dog loves this dog food and the price at chewy.com is wonderful with the added convenience of delivery on the autoship program. Win win!!

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  • Excellent Dog Food

    By on

    I started Diamond puppy as my breeder instructed for the first year. Just recently I went over to Diamond Premium Adult. No problems whatsoever. Recommend Diamond Dog Food.

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  • Recommended by Breeder of my Drahthaar Pointer

    By on

    Trying to put some weight on Fritz. Only bought small bag to see how it works. Hopefully the 435 calories per cup will help do the job. Dog switched to this food without hesitation.

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  • Quality product

    By on

    I have a secondary reason for rating this food as high quality. I have a Blue Great Dane. This breed has a predisposition to a stomach disorder called bloat. Having stable food that does not expand in a wet environment has great importance to diminish the chance of this serious condition. Many other foods have cheap by-products that exponentially swell and expand in a wet environment adding physical weight and stress to the stomach. I highly recommend this product.

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  • Best Value For Quality

    By on

    I was recommended this from someone that had a kennel. The quality really keeps the dogs healthy, and their fur in great condition. Does not have all those sketchy ingredients. Cannot find a better price for this type of quality dog food.

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  • Not doggies favorite

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    Dogs were not a fan of this food. They would finally eat by the end of the day but only because they were hungry. A bit disappointing.

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