Diamond Premium Formula All Lifestages Dry Dog Food, 40-lb bag

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At a Glance

  • High Fiber
  • Hip & Joint Support
  • Immune Support
  • All Lifestages
  • All Breeds

$30.54 First Time Autoship Price
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$44.64 Autoship Price
(-5%) future orders
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$46.99 Chewy Price
($1.18 /lb)
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FREE 1-3 day delivery
Free 365-day returns

About This Item

Details

  • Made with purposeful, quality ingredients with nutrients like vitamins and minerals in every serving.
  • Helps build and maintain lean, strong muscles with protein-rich chicken.
  • A balanced ratio of omega-3 and -6 fatty acids support a shiny coat and healthy skin.
  • Promotes healthy digestion and a strong immune system with a science-backed blend of probiotics and antioxidants.
  • Made in the USA using quality ingredients from Diamond-trusted local and global sources.

Ingredient Information

Feeding Instructions

Learn More About Diamond From Our Team of Experts

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Lifestage           
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
All Lifestages, Adult
Breed Size           
All Breeds
All Breeds
All Breeds
All Breeds
All Breeds
All Breeds
All Breeds
All Breeds
All Breeds
All Breeds
All Breeds
All Breeds
Sourced From           
Various
Various
Various
Various
Various
Various
Various
Various
Various
Various
Various
Various
Made In           
United States
United States
United States
United States
United States
United States
United States
United States
United States
United States
United States
United States
Packaging Type           

Frequently bought together

Questions & Answers

8 Customer Questions

How many cups per bag?

Answer by Chewy • Jul 07, 2018
There will be approximately 4 cups per pound of kibble. The 8 pound bag will have close to 32 cups, the 20 pound bag close to 80 cups and the 40 pound bag close to 160 cups.

Does it have corn gluten in it or any kind of corn?

Answer by Chewy • Oct 28, 2018
This food contains Whole Grain Ground Corn.

Are the probiotics added to the kibble before cooking? What percent of probiotics are still viable after cooking?

Answer by Chewy • Sep 12, 2018
Probiotics are added to the food after the cooking process so the beneficial bacteria are not killed. Every pound of Diamond Pet Foods is guaranteed to provide 80,000,000 colony-forming units (CFU) of live, active probiotic cultures.

What is the sodium content?

Answer by Chewy • Jun 30, 2025
This recipe has a sodium content of 0.33% on an as-fed basis and 0.36% on a dry matter basis.
Reviews
Write a Review
4.4
Rated 4.4 out of 5 stars
267 Ratings
Terms & Conditions

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Digestibility

79% Positive

Ingredient Quality

80% Positive

Nutritional Content

85% Positive

Palatability

76% Positive

130 Customer Reviews

Rated 5 out of 5 stars
By Tammi on Sep 4, 2025

The ease of adding it to my current subscription.

The entire online ordering process is so simple and easy. It also helps that I don't have to go to the store and lift a heavy bag of dog food into the cart, then

The entire online ordering process is so simple and easy. It also helps that I don't have to go to the store and lift a heavy bag of dog food into the cart, then into my car and then into the house. I love Chewy!

Rated 5 out of 5 stars
By Allen on Aug 18, 2025

Quality!

This is a quality product and our little furry companion loves and thrives on it. And, ordering through Chewy’s means it will be a hassle-free experience.

This is a quality product and our little furry companion loves and thrives on it. And, ordering through Chewy’s means it will be a hassle-free experience.

Rated 3 out of 5 stars
By Melissa on May 30, 2025

Liked then Not

Dogs loved this food the first bag. Second bag had to add topper to get them to eat it. So thought I’d change the flavor and go to the Diamond Naturals. Still no

Dogs loved this food the first bag. Second bag had to add topper to get them to eat it. So thought I’d change the flavor and go to the Diamond Naturals. Still no luck so had to buy more food topper to get them to eat it. I used to drive 30 miles to pick up 50 bags of this dog food 30 years ago when I was a breeder. My dogs never had any problems eating every morsel of food. Not sure what has changed with the quality of this food but my dogs just don’t want to eat it.

Rated 5 out of 5 stars
By Aaron on Sep 6, 2025

Excellent

Excellent food for my American lab mixed with Parina pro plan provides a great balance to my dogs. Intestinal health

Excellent food for my American lab mixed with Parina pro plan provides a great balance to my dogs. Intestinal health

Rated 4 out of 5 stars
By Michael on Apr 23, 2025

Good product, shipping needs to be fixed

My 50lb goldendoodle likes the food, no problems with the product itself. I've ordered it 3 times now and every time the bag is ripped (no external damage to the

My 50lb goldendoodle likes the food, no problems with the product itself. I've ordered it 3 times now and every time the bag is ripped (no external damage to the box it's in). Chewy shipped me a replacement bag no questions asked (thanks!) but new orders still arrive with a ripped bag and kibble spilling out into the containing box. Not a big deal but I hope shipping/logistics department can fix it before the next order.

Rated 5 out of 5 stars
By Aubree on Aug 26, 2025

Tried and true

We have used this dog food for 8 years now and it’s always consistent with no issues!

We have used this dog food for 8 years now and it’s always consistent with no issues!

Rated 1 out of 5 stars
By JILL on Jan 15, 2025

Lazy

I came home today to find my 40 lb bag of dogfood in a box thrown in my yard by the street in the snow rather than put on the porch. This was disappointing as I

I came home today to find my 40 lb bag of dogfood in a box thrown in my yard by the street in the snow rather than put on the porch. This was disappointing as I do alot of online ordering and have never had this kind of laziness. This alone makes me not want to order from chewy again if this is the delivery men hod, it was like they drove past and threw out the door and it landed wherever it landed. This could have easily been taken by anyone driving by where it was thrown.

Rated 5 out of 5 stars
By Joseph on Jul 6, 2025

On time delivery

Louie’s 40-lb of food arrived on time and in good condition.

Louie’s 40-lb of food arrived on time and in good condition.

Rated 5 out of 5 stars
By Stephanie on Sep 11, 2025

He likes this food only

the rice and chicken didn’t agree

the rice and chicken didn’t agree

Rated 1 out of 5 stars
By Karen on Feb 25, 2025

Doesn't follow delivery instructions

Placed order waited 2 days and then it was delivered to wrong address. My instructions are very clear, but FedEx took the lazy way out and put it some where else

Placed order waited 2 days and then it was delivered to wrong address. My instructions are very clear, but FedEx took the lazy way out and put it some where else. I'm canceling my auto ship and will go somewhere else.