DIAMOND Naturals Large Breed Adult Chicken & Rice Formula Dry Dog Food, 40-lb bag - Chewy.com

Diamond Naturals Large Breed Adult Chicken & Rice Formula Dry Dog Food

By Diamond
Rated 4.2409 out of 5 stars

$43.99Chewy Price
$41.79Autoship 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 cage-free chicken as the #1 ingredient, this recipe is specially formulated to support the needs of large breed dogs.
  • Glucosamine and chondroitin support healthy joints, omega fatty acids support skin and coat health and superfoods, including fruits like blueberries and oranges provide your large breed dog with vitamins and minerals.
  • 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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Questions & Answers

22 Customer Questions

Kitchen location?
Answer by ChewyJul 25, 2017
Diamond has five manufacturing facilities, all located in the United States. Two facilities are located in California, and the others are located in Missouri, South Carolina, and Arkansas.

Is the food disc shape or little rounds? My pup is extra and doesn’t like the little rounds
Answer by ChewyNov 14, 2020
This food is disc shaped. Please see attached image for visual reference.

how many cups in 40 lb. bag?
Answer by ChewySep 06, 2022
A 40 pound bag will contain approximately 160 cups of food. However, Diamond Naturals bags are filled by weight, not by volume.

I see the kitchen location is in the U.S.A. ...Are any of the ingredients outsourced? Or are all ingredients from the U.S.A.? Thank you!
Answer by ChewyFeb 22, 2019
Diamond Naturals uses the highest quality ingredients and manufactured in America in state-of-the-art facilities. This formula uses some ingredients that are not USA sourced, like flaxseed and barley, both which originate in Canada and dried chicory root from Belgium. There are ingredients such as folic acid and taurine that can only be sourced out of China.

ReviewsWrite a Review

Rated 4.2409 out of 5 stars
469 Ratings
Would recommend to a friend

469 Customer Reviews

Rated 1 out of 5 stars
By melgar12 on May 12, 2023

Made my Dog Vomit

Disappointed. I was hoping this food would be good for my dog since the ingredients looked really good and the price was great. Unfortunately, my healthy 2-year-old golden retriever mix would vomit after eating this food. It wasn’t every time, but it happened on 4 separate occasions and he never vomits. I went back to his old food (Purina One) and he hasn’t vomited since. Looks like other reviews mention similar experiences. I hope this company sees these reviews and changes something. Back to Purina it is!

Rated 1 out of 5 stars
By Morgan on May 8, 2023

Used to be good food!

This food used to be good quality for a reasonable price. Price is still fine but the food isn’t. I have been trying to figure out for months why my dogs have randomly been getting sick when they never have been before. Figured out it’s this food. One of my dogs has not eaten in 3 days. She literally refused to eat. I’ve had her for 8 years and she’s never turned her nose to anything. She’s had awful diarrhea and vomiting. Chewy was great about stopping a bag I had coming to the house.

Rated 1 out of 5 stars
By Megan on May 28, 2023

Do NOT get this food

Read the two reviews below mine as well. It took my dog about four weeks before he would not even touch this food. He will eat anything, he’s a lab, and would not touch his food even with an egg on top. He is still having issues with awful poops, gas, and not acting himself.

Rated 5 out of 5 stars
By Momof2 on May 22, 2023


I have never had any of my dogs eat their food like this. I have actually started feeding them smaller amounts 3x a day instead of larger amounts 2x a day. They love this food so much they would probably eat the whole bag.

Rated 5 out of 5 stars
By Staysea on May 24, 2023

No corn and dogs like the taste

My dogs like this food and im very happy because its not super expensive and its important to me that it doesn't contain corn or corn products that damage there teeth and make them fat . Corn is basically sugar .

Rated 5 out of 5 stars
By Joelle on May 1, 2023

The BEST!!

We have 6 dogs, and we only feed Diamond naturals . 2 of our dogs are extremely picky, and this is about the only food that they will eat. It’s extremely affordable for the nutritional value. We are customers for life and I would recommend this food to anybody .

Rated 1 out of 5 stars
By Doggy on Apr 19, 2023

Something’s changed

Something has changed about the Diamond brand dog food. My dogs are so gassy and their stool’s have become very soft. Thought it could be just my dogs. Was talking to another dog owner about it and they started their dogs all got diarrhea from Diamond, different protein. Won’t be buying it again.

Rated 3 out of 5 stars
By uh on May 14, 2023

formula changed

My dog used to love this food, but it seems the bag we bought in March is different and she no longer wants to eat it. She just eats it when she has to she doesn’t actually enjoy it anymore with this new bag.

Rated 5 out of 5 stars
By jama on Apr 4, 2023

his favorite

my dog(staffy 80lb) has many food allergy and i've been looking for new food. only this one he didnt get diarrhea&puke. hope they dont change ingredients. one time the dog food was greasy and browner than usual. It is usually light brown and dry. but he loved greasy one and everyday ate it all but i was curious why it was so brown&greasy???

Rated 2 out of 5 stars
By Erin on Mar 30, 2023

it seems diamond naturals changed the formula

My dog used to love this food, but they changed the formula and now my dog has gotten sick from this food. I asked a question on the site to determine what ingredients were changed so that I can avoid these in our new dog food selection but it was never posted. Hoping writing a review will shed some light on what changes were made. It sucks when companies cut corners to make a cheaper product that ends up harming your animal. Especially without any notification that a formula change took place.