DIAMOND Naturals Large Breed Puppy Formula Dry Dog Food, 20-lb bag - Chewy.com

Diamond Naturals Large Breed Puppy Formula Dry Dog Food

By Diamond
Rated 4.0036 out of 5 stars

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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 pasture-raised lamb as the #1 ingredient, this recipe is formulated with precise protein and mineral content to support the needs of large breed puppies.
  • Crafted with balanced nutrient levels to fuel larger growing bodies, contains omega fatty acids for skin and coat health and features vitamins and minerals from superfood fruits like blueberries and oranges.
  • 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

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Learn More About Diamond From Our Team of Experts

Questions & Answers

27 Customer Questions

Are the manufacturing facilities in the USA?
Answer by ChewyFeb 28, 2018
All Diamond formulas are manufactured under rigorous production standards in Diamond’s state-of-the-art U.S. facilities.

Are all ingredients used to make this food from the usa? And if not where are they from?
Answer by ChewyFeb 27, 2018
This formula uses some ingredients that are not USA sourced, like flaxseed and barley, both which originate in Canada and lamb and lamb meal from New Zealand and Australia, potato protein from Germany and dried chicory root from Belgium. There are ingredients such as folic acid and taurine that can only be sourced out of China.

why the does your food have Papaya in it.
Answer by ChewyJul 04, 2018
Papaya and papaya enzymes are healthy ingredients to add to dog food. Papaya adds sweetness as well as vitamins and fiber to a dog's meal.

How many cup is in the 6lb bag?
Answer by ChewyApr 14, 2018
There will be approximately 4 cups per pound of kibble. The 6 pound bag will have close to 24 cups, the 20 pound bag close to 80 cups and the 40 pound bag close to 160 cups.

ReviewsWrite a Review

Rated 4.0036 out of 5 stars
835 Reviews
Would recommend to a friend

835 Customer Reviews

Filter by reviews that mention

Rated 1 out of 5 stars
By Mark on Mar 20, 2023

Maybe a problem

I do not think the final outcome was caused by this food, but. This was my 18 month old German Shepherds second bag in a row of this food and there was no problem with the first bag, but within a day of starting him on this bag (3/14/23) he had very soft stools for the 7 days he ate it, nothing else unusual. Then today (3/19/23) while we were playing fetch he suddenly laid down then tried to get up and collapsed. I ran over to him and he was in bad distress, trouble breathing. He died in my arms. I think he had a heart attack.

Rated 5 out of 5 stars
By Violet2727 on Mar 12, 2023

No more diarrhea!!!

After switching from another large breed puppy food (which was almost 2xs the price) we found this option. Our golden retriever puppy had suffered from frequent episodes of diarrhea from 2mo-8mo on the old formula. We changed to this food with no slow transition and have had no diarrhea for the 2 months we have been using it. Our puppies gas is gone, she loves the food, her stools and down to 2xs a day, stools are firm, stool dries fast and is easy to clean up. We couldn't be happier with the response our puppy has had to this food. Goodbye diarrhea!

Rated 4 out of 5 stars
By xeridot on Mar 25, 2023

Mostly Happy With It

My puppy loves it but, to be fair, he loves anything! He has stress colitis and nothing we tried worked for very long. He was looking painfully thin at a time when development is critical. I tried him on this and, while it hasn't corrected the problem, it has made it so much better. He's back to growing up and out and looking great. We'll be sticking with this kibble as long as it's working for him.

Rated 3 out of 5 stars
By SBOK on Mar 4, 2023

My dogs don't like it

I like this food because the ingredients are good and it is a decent price. Last summer I adopted two pyrenees puppies and they have been eating this food since, but they don't like it much. In the last month one has completely stopped eating it. It is nearly time to switch them to adult food anyway, but I'm disappointed that they are not as big fans of this food as I am.

Rated 5 out of 5 stars
By Bobby on Mar 5, 2023

Diamond Large Breed Puppy Food

Started week 8 feeding my female Lab. She Loves it. Recently had her 16 week shots. Vet says she is doing great 30lbs. I think it was great choice. I studied relentlessly for a week before deciding on Diamond...Very Happy !!

Rated 5 out of 5 stars
By Nicki on Feb 23, 2023

Quality food at a decent price

We tried several brands of large breed puppy food before settling on this one. This is the only one that my cane Corso liked the taste of and it also agreed with her stomach. It is also a mid-range priced food when compared to other large breed formulas.

Rated 5 out of 5 stars
By MCarlin on Feb 4, 2023


This food is wonderful. And equally as wonderful is the fast shipping!! Within 2 days of ordering we got the food! We will forever only buy our food through Chewy. I will be recommending them to everyone. Thank you Chewy!!! P.s. even our cat knows something good has arrived LOL

Rated 2 out of 5 stars
By Jess on Dec 27, 2022

Not a fan of this food!

I bought this food for my 5 month old standard poodle puppy and she hated it! Not even my cats or other dog (who will eat anything) wanted to try it. So it must taste like sh*t ¯\_(ツ)_/¯. Also I usually have my puppy work for her meals meaning I do training and use her kibble as a reward by hand. When this kibble mixes with saliva it leaves a nasty paste all over your hands. I bought a big bag so I wanted my puppy to finish the bag before switching her to a different food but it was like pulling teeth trying to get her to eat and she had constant runny stool and BAD BAD BAD gas on this food. Needless to say, we couldn’t stick it out to finish the bag and bought a different brand for her.

Rated 5 out of 5 stars
By Erik on Jan 5, 2023

Great food and value!

Have an Australian German Shepherd and she LOVES the food. Tried Merrick, but was too rich and caused diarrhea. She is perfect on this food and much happier! Kibble size is great as smaller than adult but not tiny like some other puppy food. For the price, you would think it might not be as good as some other premium food, but our pup has so much energy, digestion is great, and coat is shiny and smooth. Can't go wrong here. Will definitely be using Diamond Naturals forever with this pup.

Rated 1 out of 5 stars
By AmyD on Jan 7, 2023

Diarrhea since opened the most recent bag

Both of my dogs have had diarrhea since we opened the most recent bag. We have a five month old German Shepard and a eight month old boxer. Both dogs have been on this since 8 weeks. I will have to try another food and take them to the vet. There is nothing else that could be causing this. They are indoor dogs that are never unsupervised.