Diamond Maintenance Formula Adult Dry Dog Food

By Diamond
Rated 4.2469 out of 5 stars


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$27.99Chewy Price
$26.59Autoship Price
(Save an extra 5%)

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Total Price: $56.91

About This Item


  • Formulated with 22% protein, 12% fat and other vital nutrients to support an ideal body condition for your moderately active pooch.
  • Chelated minerals help ensure maximum absorption of vital nutrients; powerful antioxidants including selenium and vitamin E help support his immune system and overall health
  • Omega-3 and omega-6 fatty acids provide support for healthy skin, a shiny coat and overall well-being while dried beet pulp helps to aid digestion.
  • Made with ingredients from trusted and sustainable sources for complete and balanced nutrition with essential vitamins and nutrients.
  • Made in the USA by a family owned and run company with the most scientifically advanced food safety protocols because your pal deserves nothing but the best!

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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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Top IngredientsChicken By-Product Meal, Wheat Flour, Whole Grain Ground Corn...Chicken By-Product Meal, Whole Grain Ground Corn, Wheat Flour...Lamb, Lamb Meal, Ground White Rice...Menhaden Fish Meal (source of DHA-Docosahexaenoic Acid), Grain Sorghum, Peas...Chicken, Chicken Meal, Cracked Pearled Barley...
Health FeatureDigestive Health, Immune Support, Skin & Coat HealthHip & Joint Support, Immune SupportDigestive Health, Hip & Joint SupportDigestive Health, Immune Support, Skin & Coat HealthDigestive Health, Immune Support, Skin & Coat Health
Special DietHigh Fiber, With GrainHigh Fiber, With GrainNo Corn No Wheat No Soy, With GrainGluten Free, No Corn No Wheat No Soy, With GrainNo Corn No Wheat No Soy, With Grain
Breed SizeSmall Breeds, Medium Breeds, Large Breeds, All BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsExtra Small Breeds, Small BreedsSmall Breeds, Medium Breeds, Large Breeds, All BreedsExtra Small Breeds, Small Breeds
Food FlavorPoultry, ChickenPoultry, ChickenMeat, LambSeafood & Fish, SalmonPoultry, Chicken
Food FormDry FoodDry FoodDry FoodDry FoodDry Food

Questions & Answers

12 Customer Questions

How many cups are in 1 40lb bag?
Answer by ChewyNov 13, 2018
The 40 pound bag will have approximately 160 cups inside and the 20 pound bag will have about 80 cups.

What has larger bite size for shepherds and pyrenese. Adults
Answer by ChewyOct 26, 2017
The Diamond Naturals Large Breed Adult Chicken & Rice Formula is recommened for large breed dogs, such as your shepherds and pyrenese.

what exactly does this kibble look like
Answer by ChewySep 10, 2020
This kibble is disc shaped and slightly smaller than a dime. Please see attached image for reference.

Is there anyway to get this dog food in a 50 Lb bag through you?
Answer by ChewyDec 02, 2017
We currently only carry this Food in either a 20 pound or 40 pound bag size.

ReviewsWrite a Review

Rated 4.2469 out of 5 stars
162 Ratings
Would recommend to a friend

160 Customer Reviews

Rated 5 out of 5 stars
By Tori on Aug 10, 2023

Happy, Healthy

My old dog is running around like a puppy again, playing with the little dogs more. And all my dogs seem to love it. We used to feed them Purina, but age was starting to show on my 9 year old Rottie mix. He was healthy, but not full of energy or very happy. He does have some allergies that cause skin issues, but they have gone away with Diamond. I really recommend for mutts at the least, if you want high quality but at more affordable rates. But I also suggest don't forget supplements for individual dog's health. Like joint or digestive issues. But this food gives an extra boost to my dogs' energy levels. I'm really happy to finally found a healthy compromise that my pups love.

Rated 2 out of 5 stars
By LAT on Aug 6, 2023

dogs do not like

This formula contains wheat flour (cheap filler). I thought it would be healthier because it is a better brand. It is no better than purina. The dogs do not like this. the boy way they will eat it is if I put meat on top of it. Then they pick the meat out and only eat half a bowl of kibbles. Not impressed with this formula. I do like the other Diamond pet foods more (the dogs like them actually).

Rated 5 out of 5 stars
By Dave on Aug 28, 2023

Diamond Maintenance fuels my dog.

My dog loves Diamond Maintenance. We used it for a long time and then my local provider quit carrying it and we made a switch. When I found it was available at Chewy I placed and order and signed up for the subscription.

Rated 5 out of 5 stars
By Mollybtrue on Jul 24, 2023

My Dogs won’t eat anything else!

A friend gave me 2 bags of Diamond Maintenance Formula Adult Dry Dog Food & now my dogs won’t eat anything else. They used to only eat dry food if I added wet food to it but they all devour this brand by itself.

Rated 5 out of 5 stars
By PriceGoUp on May 27, 2023

We like it

The dogs like eating it! One dog can get overweight with other foods and is keeping the right weight with this food. The other dogs are maintaining exactly what they need. Easy on their stomachs, no digestive issues! Easy to clean up after the dogs if you know what I mean. Even the picky eater is enjoying eating this food thankfully!!! The price is good.

Rated 3 out of 5 stars
By DEEDEE on Mar 8, 2023

Gas, Super smelly loose poo

Took 2 weeks to transition from Diamond Naturals to Diamond Maintenence. After another 2 to 4 weeks my 2 year old pounddog bully mix that has an iron stomach would not eat it. Back to the Naturals, no problems. I do not recommend Maintenence. I only switched because of cost. I've never had this happen on any dog food.

Rated 4 out of 5 stars
By AB on May 26, 2023

Dogs seem to like it

It is a good value, I have tried other diamond foods, This is the first time with this one. Dogs seem to like it.

Rated 1 out of 5 stars
By Danny on Apr 24, 2023

One of the worst

This is a boring, lifeless food. This caused both of my dogs to have gas and horribly bloated stomachs. VERY DISAPPOINTED!!!

Rated 1 out of 5 stars
By Becca on Feb 18, 2023

Do not reccomend

My dogs eat EVERYTHING. But they won't eat this. My biggest dog who eats 3 cups of food a day won't touch this until he's starving. All 3 of them have also had very bad gas since starting on this food. I'm afraid to see what the yard looks like.

Rated 5 out of 5 stars
By Babs on Feb 1, 2023

Quality ingredients

My dogs love this food, I tried it after their usual food at my local retailer suddenly jumped in price over $15 a bag, a 50% increase!