Diamond Performance Formula Adult Dry Dog Food, 40-lb bag

By Diamond
Rated 4.371 out of 5 stars
Slide 1 of 7
Diamond Performance Formula Adult Dry Dog Food, 40-lb bag slide 1 of 7
Slide 1 of 7
Diamond Performance Formula Adult Dry Dog Food, 40-lb bag slide 1 of 7
$42.99Chewy Price
$40.84Autoship Price
Autoship (Save an extra 5%)
Choose Autoship at checkout for regular deliveries.

Why Autoship?

  • FREE access to chat with licensed vets 7 days a week.
  • Save 5% on all future Autoship orders.
  • No fees, no commitments - cancel Autoship anytime.

In Stock
FREE 1-3 day shipping over $49



Frequently Bought Together

This Item - Diamond Performance Formula Adult Dry Dog Food, 40-lb bag
Rated 4.371 out of 5 stars
62
$42.99Chewy Price
PetAg Dyne Vanilla Flavored Liquid High Calorie Supplement for Dogs, 16-oz bottle
Rated 4.4841 out of 5 stars
345
$19.54Chewy Price
Pro-Sense Dog Vitamin Solutions Chewable Tablet Multivitamin for Dogs, 90 count
Rated 4.3889 out of 5 stars
270
$4.98Chewy Price
Total Price: $0.00

About This Item

  • Formulated with 30% protein, 20% fat and other vital nutrients to support an ideal body condition for your 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!
Play Video: Learn More About Diamond From Our Team of Experts
Learn More About Diamond From Our Team of Experts

Compare Similar Items

Customer Rating
Rated 4.371 out of 5 stars
62
Rated 4.56 out of 5 stars
125
Rated 4.4286 out of 5 stars
49
Rated 4.4666 out of 5 stars
823
Rated 4.4637 out of 5 stars
634
Price
$42.99Chewy Price
$36.03Chewy Price
$47.99Chewy Price
$39.99Chewy Price
$40.99Chewy Price
Autoship
$40.84Chewy Price
$34.23Chewy Price
$45.59Chewy Price
$37.99Chewy Price
$38.94Chewy Price
Top IngredientsChicken, Chicken By-Product Meal, Whole Grain Ground Corn...Chicken By-Product Meal, Wheat Flour, Whole Grain Ground Corn...Chicken By-Product Meal, Whole Grain Ground Corn, Wheat Flour...Beef Meal, Grain Sorghum, Ground White Rice...Lamb Meal, Ground White Rice, Cracked Pearled Barley...
Special DietHigh Fiber, With GrainHigh Fiber, With GrainHigh Fiber, With GrainNo Corn No Wheat No Soy, With GrainNo Corn No Wheat No Soy, With Grain
Health FeatureHip & Joint Support, Skin & Coat Health, Immune SupportImmune Support, Digestive Health, Skin & Coat HealthHip & Joint Support, Immune SupportImmune Support, Digestive Health, Skin & Coat HealthImmune Support, Digestive Health, Skin & Coat Health
Breed SizeSmall 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 BreedsSmall Breeds, Medium Breeds, Large Breeds, All Breeds
Food FlavorChicken, PoultryChicken, PoultryChicken, PoultryBeef, MeatLamb, Meat
LifestageAdultAdultAdultAdultAdult

Questions & Answers

14 Customer Questions


Does this product contain soy?
Answer by ChewySep 06, 2018
All of the Diamond food lines doesn't contain soy.

What size are the nuggets? My dog liked the size of the puppy formula. the bag I have now has larger nuggets.
Answer by ChewyApr 06, 2020
This formula has kibble shaped like a flat, round disk, approximately the size of a dime.

Is this product grain free?
Answer by ChewyFeb 21, 2020
This formula is not grain-free. It contains whole grain ground corn. For a complete list of ingredients, click the “Nutritional Info” tab, next to the “Description” tab, just under the product photos when viewed on a desk top. Click the "Nutritional Info" tab, next to the "Q&A" tab, towards the top bar above the product image when viewed on the app.

is this good for helping a dog gain weight and keeping it
Answer by ChewyJun 19, 2019
While this wasn't specifically formulated for weight gain, the feeding amount should be adjusted to your pet's specific needs. If unsure, consult your veterinarian.


ReviewsWrite a Review

4.4
Rated 4.371 out of 5 stars
62 Reviews
94%
Would recommend to a friend
1
6.4516
6%
2
6.4516
6%
3
3.2258
3%
4
11.2903
11%
5
72.5806
73%

62 Customer Reviews



Rated 5 out of 5 stars
By Abbe on Jun 24, 2022

Great food

My dogs love this food. When other dogs come to visit if any food is left in the bowl it is quickly eaten by their visiting friends


Rated 5 out of 5 stars
By ShowMama on Feb 20, 2022

Show Boxers

I used to show and breed champion Boxers for 27 yrs and switched from Pro Plan to Diamond Performance when it very first came out. My dogs were always in top quality condition, hardly shed, and had super shiny and soft coats (so they required very little grooming before going in the show ring). They always maintained perfect show weight and stamina. Their stool was dark and smaller piles, because their bodies used all the nutrients with very little junk ingredients to waste (the stool tells a lot about the quality of dog food). The puppy formula was also excellent for my pups. Many show people also switched to Diamond for same results. I'm retired now and have a Lab, Boxer and a Shih Tzu, but I still feed Diamond after all these years (except my Shih Tzu needs grain-free food, which I wish Diamond offered).


Rated 5 out of 5 stars
By Marianne on May 7, 2022

Diamond Natural Dog Food

Used this product for many years .Never had problem.Dogs love it ,never had a problem with allergies.


Rated 5 out of 5 stars
By Enzo on Jan 16, 2022

My American Bulldog/Boxer loves this!

I try to give my canine a variety of dog food. I want him to enjoy his meals as well as get the best nutrition. He loves this and I thought he would because we use Diamond Brand a lot. Thank you for having the best foods to choose from and great prices.


Rated 5 out of 5 stars
By Vinny on Feb 15, 2022

Dog loves it.

Just rescued a new , abused & older shepherd. She needed to rebuild and this seemed to do the trick so far, High protein and fat content .


Rated 1 out of 5 stars
By diamond11 on Jan 14, 2022

Nasty/moldy

Normally we love this food BUT THERE WERE BUGS/MOLD IN THE BAG


Rated 5 out of 5 stars
By Ssuitepea on Apr 14, 2021

He Loves It

I’ve used Diamond chicken and rice naturals before, but I was wanting to switch it up for summer since we recently moved and my dog has a much bigger area to run. I wanted to put a little bit of weight on him too. So far, he loves it and it hasn’t caused any stomach issues (he’s sensitive). Haven’t noticed any weight gain yet, but it’s only been a few weeks.


Rated 2 out of 5 stars
By Eighty on Mar 27, 2021

Not but so cheap

It's ok. Truth be told, I'd almost rather spend that extra dollar at a local store. 5% is only a buck and change. And it's crazy bc they give you a helluva deal on the first purchase. Only to turn around and it not be anywhere near the first purchase!!! Kinda baaad for business.


Rated 5 out of 5 stars
By Granny on Mar 10, 2021

My Baby girl's Dogs needed this food!!

My daughter lives in Tallahassee and on her last semester at FSU...Her and her room mate live in a rented house, off campus. They both have full grown Huskies so I ordered the 40 pound bag for the dogs to share...One less bill for the girls and the dogs are fat and happy!! Chewy ships fast!!


Rated 4 out of 5 stars
By Gabbysgrub on Feb 15, 2021

she loves it!

my 12 year old Boxer loves this food and she has more energy.