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Diamond Naturals Dog Food Reviews: Puppy, Adult & Senior Formulas


Last Updated: May 9, 2024 | 15 min read | 2 Comments

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Diamond Naturals is a well-trusted, high-quality brand that many owners turn to when they want to update their dog’s diet or prepare their new puppy’s nutrition plan. In our Diamond Naturals dog food review, we run you through all the reasons why it is a great option to consider.

We’ll start by looking at the brand itself and its recall history to make sure that it takes the safety of our pups seriously. Then, we’ll review a selection of the most popular formulas and tell you why we think they’ll work well for your pup. We’ll then finish by answering all of the frequently asked questions about Diamond Naturals.

We’ll leave no stone unturned and be honest about what we find. And once you’ve finished reading this short but comprehensive guide, you’ll know whether Diamond Naturals is the brand for you and your pup.

Our Rating

Best For Puppies

Puppy Formula

Our Rating

Best For Adults

Adult Formula

Our Rating

Best For Seniors

Senior Formula

Brand History

Diamond Pet Food company is a big name in the pet food industry. They were founded in 1970 by two brothers-in-law, Schell and Kampeter. Not only are they one of the biggest brands in America, but they are also one of the largest pet food manufacturers too. Diamond Pet Food is owned by Schell & Kampeter. These guys also own other dog food brands, including Taste of the Wild and Chicken Soup for the Food Lovers Soul.

Despite their huge expansion and over 50 years of success, they still value their midwestern family principles and ownership. And this is a huge selling point of theirs. Their passion for making quality pet food is why they have succeeded despite competition from brands such as Hill’s Science Diet. Every product is still made in the USA.

Diamond Pet Food owns different lines of Diamond dog food, but this review is focused on Diamond Naturals. Diamond Naturals is one of the most popular because of their natural take on the doggy diet. The other Diamond food lines include Diamond, Diamond Care, and Diamond Pro89. Although Diamond Naturals lists their Diamond Naturals Grain-Free product line as separate from Diamond Naturals, we’ll include these products in this review.

Diamond Natural’s mission is to create high-quality, natural doggy diets for families like theirs across America. They provide dogs “with complete, holistic nutrition to promote overall health and wellness.” We’ll discuss the ingredients they use further down, but every bag or can of Diamond Naturals guarantees superfood goodness with every bite.

Recall History

Blue Buffalo Recall History
This brand has had few recalls compared to other brands.

Food Ingredients

Looking at the recall history of a brand is a great way to see how important the safety of our pups is to them. It can also tell us how honest they are with us and how they deal with problems. A company that risks our beloved pets by covering their tracks is not a brand you want to buy from. A product recall occurs when a product does not meet the standards expected by either the brand itself or the industry. Once the problem is identified, the brand can issue a voluntary recall, or the US Food & Drug Administration (FDA) can issue a recall.

Diamond Naturals has had several products recalled in the past. But considering how big a brand they are and how much pet food they manufacture, it is expected and similar to other quality brands.

December 2005 saw several diets made in their South Carolina facility recalled due to aflatoxin contamination. Aflatoxin is a naturally occurring chemical that is found in corn, and it can cause serious liver damage. Sadly, it resulted in the death of a few dozen dogs. This was Diamond’s largest, most serious recall, and it has resulted in them paying a large settlement to affected owners.

Diamond Pet Food was affected by the nationwide melamine food recalls that occurred in 2007. However, this affected many brands in America, and it was the fault of the Chinese supplier. There were two further recalls in April and May 2012. These both involved recalling several dry formulas due to the possible contamination of salmonella. There were no reported dog illnesses.

Food Ingredients

Diamond Naturals is a natural, high-quality diet, but what does this mean for the ingredients? Well, let’s start by saying that there are no nasty surprises in their food compared to other cheaper, low-quality dog foods. This means no artificial colors, preservatives, or flavors. They also boast of not using any fillers, corn, or wheat, which can irritate some dogs’ digestions.

Let’s start with protein, as it’s one of the most important components of a dog’s dinner. Diamond Naturals’ most common meat proteins are cage-free chicken, pasture-raised lamb and beef, and real salmon. The average protein content of their food is 28%, which is above the market average. They do not use meat by-products, only real meat and meat meals. This is a concentrated protein ingredient that is also full of glucosamine which is great for doggy joints.

Diamond Naturals offers options for both grain-free and grain-inclusive diets. Some parents think grain-free is better, while others avoid grain-free due to the recent cardio concerns surrounding grain-free doggy diets. Diamond Naturals also lists high-quality fats which are better for skin and coat health. These include chicken fat, salmon oil, and flaxseed.

Every bag or can of food lists superfood ingredients, antioxidants, and other essential nutrients. Some of the key superfoods that Diamond Naturals uses are quinoa, blueberries, coconut, kale, oranges, carrots, chia seeds, papaya, and spinach. These all contain key nutrients to better the health of our pups. These ingredients are definitely not found in lower-quality kibbles. Plus, all of the minerals are chelated, which means that dogs find them easier to absorb into their system.

Every bag of dried food contains guaranteed live probiotics for digestive and immune system support with every bite. They are enhanced with K9 Strain Probiotics, which is a unique blend of beneficial, gut-friendly bacteria. This means smoother digestion, (hopefully) less gas, and firmer stools. A blend of prebiotic fibers, including pumpkin, assists with a healthy digestive system too.

Despite using these great quality ingredients in their products, Diamond Naturals is budget-friendly for consumers. They aim to provide top-quality food for families at a price that feels good. And looking at the prices of their 40-pound bags (which are great for multi-pet households or large dog breeds), you can definitely feel good about providing good-quality nutrition that doesn’t cost the earth.

Diamond Naturals Formulas

Some brands offer different lines of food. This can often lead consumers to wonder which range is best for their dog and make the decision more confusing. Instead, Diamond Naturals bundle all of their kibbles into one line – Diamond Naturals. Nice and simple. Diamond Naturals also have a few specific formulas on top of their standard kibbles. So, let’s take a closer look at these before we review the others.

Skin & Coat

Diamond Naturals Skin & Coat

Diamond Naturals Skin Coat jpg
  • Formulated for dogs of all life stages.
  • Features real salmon as the #1 ingredient and helps maintain skin and coat health.
  • Contains vitamins and minerals.
  • Omega fatty acids for skin and coat health.
  • Each serving includes species-specific K9 strain proprietary probiotics..
  • Made without corn, wheat, artificial flavors or colors.

This option is designed specifically for sensitive dogs who need extra help to maintain their skin and coat health. Or those who have food-related skin sensitivities. It is aimed at dogs of all sizes and life stages. This is a hypoallergenic, grain-free kibble that relies on other energy-supplying ingredients such as potatoes, lentils, and peas. It is also chicken-free, which is a huge selling point.

The first two ingredients are wild-caught salmon and fish meal, providing lots of omega-three fatty acids to nourish your dog’s coat from the inside out. Canola oil and flaxseed are rich in omega-six fats for overall wellness. Vitamin E, biotin, and folic acid also contribute to a shiny, lush coat. All of the superfoods mentioned above are listed in this kibble, as are the blend of K9 strain probiotic products.

Extreme Athlete

Diamond Naturals Extreme Athlete

Diamond Naturals Small Breed Adult
  • High-protein (32%) recipe contains real chicken and is specially formulated to support the needs of highly active and sporting dogs.
  • Nutrient-rich kibble provides the energy to thrive and contains omega fatty acids for skin and coat health.
  • Vitamins and minerals from superfoods.
  • Each serving includes species-specific K9 strain proprietary probiotics.
  • Made without corn, wheat, artificial flavors, or colors.

This kibble is designed for extreme athletes and hardworking hooches, be that through canine employment or sporting ability. This recipe contains optimized protein levels, fat, and whole grains to fuel the muscles of highly active dogs. L-carnitine helps to stimulate the metabolism and keep dogs strong and lean. There are lots of superfoods packed into the kibble to ensure that the rest of his nutritional needs are taken care of.

Chicken meal and chicken are the first two ingredients, and combining egg products contributes to the high protein content of 32%. 91% of the protein content is from chicken and egg alone, so it is super meaty, and your pup is bound to love the taste. It is also a pea-free formula. The calorie count per cup is 470, giving your dog enough fuel for his day ahead. Not many brands have a performance kibble option, so this is a great offering from Diamond Naturals.

Diamond Naturals Dog Food Reviews

Now we are going to review Diamond Naturals’ other options. We have categorized our reviews into life stages, making it easier to navigate. The three life stages all require different nutrition. Let’s see how well they do and what they can offer your pup.

Puppy Formulas

Diamond Naturals has a total of two puppy-specific formulas. They do have other all-life-stage foods that we’ll review in the adult formula section that could also be an option for your pup. Both recipes are grain-inclusive, so there isn’t an option for grain-free puppy-specific food, unfortunately. But it’s great that there are options for small and large pups, so let’s take a look at them.

Diamond Naturals Small Breed Puppy

  • Budget-friendly formula.
  • Cage-free chicken is first ingredient.
  • DHA for brain support.
  • No corn, wheat, or filler.
  • 419 Calories per cup.
  • 32% Protein, 22% Fat, 3.5% Fiber.

This kibble is made for tiny mouths, thanks to the tiny-sized kibble. The protein and fat ratios are optimized for small-breed puppies who need more energy compared to larger dogs. The protein content is 32%, and the fat content is 22%. The first two ingredients are tasty cage-free chicken and chicken meal. Egg product and fish meal are also listed to add to the protein content and supply additional DHA that developing puppies need.

The primary grains in this recipe are ground white rice and barley. These provide nutrients, energy, and fiber. Chicken fat is listed which is rich in linoleic acid, which is great for skin and coat health. Kale, pumpkin, oranges, and blueberries provide antioxidants for a health boost, and added vitamins and minerals ensure that your pup’s developing immune system is supported.

Diamond Naturals Large Breed Puppy

Diamond Naturals Senior
  • No corn, wheat, filler, or artificial flavors.
  • DHA for brain and vision health.
  • Omega fatty acids for skin and coat.
  • Powerful antioxidants for immune health.
  • 342 Calories per cup.
  • 27% Protein, 15% Fat, 3% Fiber.

Although this kibble is designed with large breed puppies in mind, it fits the nutrient profile for all life stages, including small and medium-sized pups. So if your smaller pup can handle the large kibble sizes and they prefer lamb, this could be a great option for them. Lamb and lamb meal are the first two ingredients, and the protein content is slightly lower at 27%.

The grains listed in this recipe are wholegrain brown rice and barley. Some sensitive pups find lamb and brown rice easier to digest compared to chicken and white rice. It also lists all the probiotic ingredients mentioned in previous sections. So this could also be a better option for sensitive pups. Egg product, salmon oil, and fish meal supply the developmental DHA nutrients and omega-three fatty acids needed.

Adult Formulas

Dog eating Blue Buffalo Food from Bowl
There is a wide variety of formulas for adult dogs.

Diamond Naturals has a total of 13 adult kibbles, 3 of which are from the grain-free line. The adult life stage usually begins between 12 and 18 months, depending on the breed. Adults need more of a well-balanced diet now that they have completed most of their growing. Let’s take a look at a handful of Diamond Naturals’ most popular adult formulas.

Diamond Naturals All Life Stages

  • Real cage-free chicken is the #1 ingredient.
  • Support bones, joints, and lean, strong muscles.
  • Supplies the energy and muscle building blocks your dog needs with 26% protein and 16% fat.
  • Contains omega fatty acids for skin and coat.
  • Helps support healthy digestion, immune system health, and overall wellness.
  • Made without corn, wheat, artificial flavors, or colors.

This is Diamond Naturals all life stage formula that appears to be the go-to for most doggos. Chicken and chicken meal are the first two ingredients on this list, contributing to a protein content of 26%. Making it tasty and AAFCO compliant but not too meaty, which is ideal for many sensitive dogs. Probiotic ingredients also help to achieve smoother digestion.

This option has one of the lowest fiber contents that Diamond Naturals offers. At just 2.5%, it can be a good option for dogs who find it difficult to digest too much fiber. Thankfully, dried chicory root and beet pulp ensure that there’s a little bit in there as all dogs need some fiber. Nutrient-rich ingredients such as dried kelp, spinach, and papaya keep your dog’s immunity fighting fit.

Diamond Naturals Adult Beef & Rice

Science Diet Senior Dog Food Formula
  • All-natural recipe.
  • Nutrient-rich.
  • No corn, wheat, or filler.
  • 329 Calories per cup.
  • 25% Protein, 15% Fat, 3.5% Fiber.

According to online reviews, this is one of the most popular recipes. This recipe is designed for all adult dogs only, not all life stages. The first ingredient in this recipe is beef meal, a lean and tasty protein source that is full of amino acids and iron for muscle repair and strength. The protein content is 25%, and this is the only meat protein source that is great for simple digestion.

Like all of Diamond Naturals products, this recipe contains the superfoods and probiotics expected. Grain sorghum and ground white rice are the primary grains offering energy and other nutrients. Flaxseed, chicken fat, and coconut soothe your dog’s skin and coat from the inside out. It’s also packed with vitamin E, biotin, and folic acid. Glucosamine supplements are added for an extra boost of joint support.

Diamond Naturals Small Breed Adult

Diamond Naturals Chicken & Rice Formula All Life Stages
  • Features real chicken as the first ingredient.
  • Specially formulated to support the needs of small breed dogs with smaller kibble size.
  • Provides the energy to thrive, contains omega fatty acids for skin and coat.
  • Antioxidants and prebiotics help support healthy digestion, immune system health, and overall wellness.
  • Made without corn, wheat, artificial flavors, or colors.

This is Diamond Naturals offering for small breed adults. The kibble pieces are smaller compared to their standard or large kibbles. Plus, the protein and fat content is higher to ensure their energy-consuming little bodies are fueled for the day. Chicken and chicken meal are the first two ingredients, and they contribute towards a protein content of 27%.

The fat content in this recipe is 16%, which is higher than most other of their recipes. Chicken fat is listed high up on the ingredients list, and this is full of linoleic acid, which is great for skin and coat health. This recipe guarantees live naturally occurring microorganisms with every bite, providing smoother digestion for smaller tummies. This recipe is free from artificial flavors, colors, and preservatives.

Diamond Naturals Large Breed Adult Dog Chicken & Rice

Nutro Large Breed Senior Food
  • Made with cage-free chicken.
  • Omega fatty acids for skin & coat.
  • No corn, wheat, or fillers.
  • Nutrient-dense probiotic blend.
  • 327 Calories per cup.
  • 23% Protein, 13% Fat, 3.5% Fiber.

This is Diamond Naturals recipe of choice for the maintenance of large and giant breed adult dogs. The first two ingredients are cage-free chicken and chicken meal. This, along with egg product, contribute to a protein content of 23%. Although this might seem quite low compared to the other options, it helps large dog breeds stay lean and healthy. Plus, it still exceeds AAFCO guidelines.

This recipe is full of superfoods to help your large pooch stay fighting fit. Dried kelp is listed, which is rich in calcium and other minerals, which is ideal for your pup’s large bones. This option has a very high glucosamine content of 750mg/kg thanks to the added supplement, which excels many other higher-quality kibbles. This means your large dog’s joints are supported no matter how active or heavy he is.

Diamond Naturals Grain-Free

Diamond Naturals Skin & Coat
  • Grain-free recipe made with real whitefish as the first ingredient.
  • Natural recipe with added vitamins and antioxidants.
  • Nutrient-rich and highly digestible.
  • Made with proprietary probiotic blend to help support your canine companion’s digestive health.
  • No corn, wheat, filler, artificial flavors, colors, or preservatives.

This is one of three grain-free options offered by Diamond Naturals. The other two grain-free flavors are beef and sweet potato and chicken and sweet potato. The first two ingredients in this recipe are wild-caught whitefish and fish meal, and the protein content is 24%. This is an all-life stage formula that can also be eaten by puppies and seniors according to AAFCO guidelines.

The grain-free alternative ingredients in this recipe are sweet potatoes, peas, and lentils. The fiber content of this recipe is 5%, making it a high fiber recipe. Blueberries and raspberries are the antioxidant proving ingredients, on top of added vitamin and mineral supplements. This option lists all of the probiotic goodness that soothes your dog’s digestive tract like all of the other recipes.

Senior Formulas

Senior Eating Blue Buffalo Food
You’ll find a nice variety of recipes for your senior pup.

Diamond Naturals have one senior-specific option. However, many of the all-life stage options mentioned previously are suitable for many senior dogs too. You need to remember that senior dogs are less active and slower than they used to be. Because of that, they need much less energy than before. So, you need to choose a senior-specific option or an all-life stage option that isn’t too heavy on protein, fats, and calories. Seniors also do well on a kibble with a higher fiber content as it keeps them feeling fuller between mealtime. As well as a higher glucosamine content to support their joints. So, let’s take a look at this senior-specific option.

Diamond Naturals Senior

  • Nutrient-dense formula.
  • No corn, wheat, or fillers.
  • No preservatives.
  • Glucosamine and Chondroitin boost.
  • 318 Calories per cup.
  • 25% Protein, 11% Fat, 3% Fiber.

Their senior option meets the AAFCO guidelines for the maintenance of adults too. So it could also be an option for adults who need a less rich option or manage their weight. Chicken and chicken meal are the first two ingredients contributing to a protein content of 25%. The fat content is just 11%, and chicken fat is the main recognized fat in this formula.

Ground rice (brown and white) and gentle oatmeal are the primary grains used in this senior recipe. The easy-to-digest, slow energy releasing ingredients are great for seniors. The glucosamine content is high, offering 720mg/kg, which is ideal for older achy joints. This is thanks to added glucosamine supplements on top of the healthy fats for joint support.

Wet Food

Diamond Naturals offers a total of three wet foods in different flavors: chicken, beef, and lamb. We only share one below, but all are similar other than the flavor. Wet foods are an important part of a brand’s offering because not all dogs like or can eat dried kibble, whether your pup is fussy and needs extra meaty juice to compliment his kibble. Or they are seniors with no teeth and unable to eat the hard biscuit pieces. Wet foods are important.

Diamond Naturals Canned Wet Pate Beef

Diamond Naturals Extreme Athlete
  • High-quality protein made with real beef as the first ingredient.
  • Natural food with added vitamins and minerals.
  • Fruits, vegetables and superfoods for natural antioxidants.
  • Nutrient-rich and highly digestible.

Real beef is the number one ingredient in this canned food, followed by beef broth and beef liver. Dried egg product, lamb meal, and fish meal follow shortly after, contributing to a higher protein content of 10%. This mixture of yummy meats means extra taste and a great blend of amino acids to support healthy and strong muscles. The fat content is lower in this product, with 5% fat.

This wet food is highly digestible thanks to prebiotic fibers such as carrots and gentle pumpkin. The ingredients list also mentions superfoods such as cranberries, quinoa, and blueberries, as well as a long list of vitamin and chelated mineral supplements which are easier for your pooch to absorb. This canned food is suitable for the growth and maintenance of all-sized puppies and the maintenance of adults according to the AAFCO guidelines.

Frequently Asked Questions

We have now finished reviewing the Diamond Natural brand. But often, there are still a few frequently asked questions left on an owner’s mind. So we thought we’d take the time to clear them up for you. Let’s take a look at them.

Is Diamond Naturals a good-quality dog food?

Yes, it is. Diamond Naturals use top-quality ingredients that benefit the health of your dog. Real meat is always the first ingredient, which is a great sign of a good-quality product. Plus, the protein content is higher than the market average, and this relies on meat protein more so than plant protein. They are a well-established family brand and have always been quick to deal with safety issues. For all these reasons and more, we are satisfied (as are many other doggy owners) that Diamond Naturals make great dog food products.

Which Diamond Naturals formula is best for my dog?

The only person who can really answer this question is you because it comes down to what your pooch needs. If they are a puppy, stick to a puppy food. And if they are a highly active or hardworking pooch, choose the performance kibble. And so on – all dogs are unique. But as you can see from our reviews above, there is a great mix of formulas to choose from. So as long as you stick to what Fido needs and likes, you should be able to find the perfect product for sure.

Where is Diamond Naturals dog food made?

Diamond Naturals is manufactured in facilities in the USA. Many of their key ingredients are sourced from America. However, some of their other ingredients are globally sourced. There is a lot of debate surrounding sourcing ingredients from overseas, but most quality brands do this.

Is Diamond Naturals a safe brand for my dog?

Sure, their history surrounding the aflatoxin contamination 15 years ago can worry some consumers. But, it’s worth remembering that all established, quality brands have a product recall history, even the most premium brands. Plus, the pet food industry has improved a lot since then. Diamond Naturals pride themselves on their stringent safety checks. Plus, all of their plants are Safe Quality Food certified, and third-party auditors ensure their facilities meet their strict safety standards. We are satisfied, as are external experts, that Diamond Naturals is a safe brand.

How do I transition from my dog’s old food to a Diamond Naturals product?

Transitioning your dog between food products is an important process that must not be skipped. Start by adding a small amount of Diamond Naturals to your dog’s old kibble. Over seven days, gradually increase the amount of new food and decrease the old kibble for each feeding. Diamond Naturals recommends extending the transition period to 10 to 14 days to avoid stomach upset if your pooch has a sensitive stomach.

What should I do if my dog doesn’t like a Diamond Naturals product?

All dogs are different, and there are many reasons why this might be happening. Some dogs need a little extra time to adjust to their new kibble as they might be unsure by the change. Some dogs need a little extra persuasion to try their new food. To do this, try adding a splash of warm water or low-sodium broth to release the meaty aromas. This nearly always does the trick. However, your dog simply might not like his new food. Thankfully, as you can see from the positive online reviews, this rarely happens. So just give your pup a little extra time.

Final Thoughts

Diamond Pet Food is a long-standing and trustworthy brand. They are one of the biggest names in the American pet food industry. Not only do they manufacture a lot of dog food under other names, but they also make a lot of their own top-quality products. They have several lines of Diamond branded food, and Diamond Naturals is one of its most popular.

We have studied the ingredients lists, and can confirm that they use high-quality ingredients to benefit the health of our pets. They don’t use any artificial colors, flavors, preservatives, or cheap fillers. They create top-quality products at a good price. Plus, they offer a wide variety of formulas to cater to all the doggy dietary needs out there.

Now that you know that Diamond Naturals is a great dog food brand, all you need to do is pick which formula best meets the needs of your dog. Once you’ve done that, you can rest assured that the health of your pooch is in good hands. They are bound to love the product just as much as all the other reviewers (and their pups!) who enjoy this brand.

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The information provided through this website should not be used to diagnose or treat a health problem or disease; it is not intended to offer any legal opinion or advice or a substitute for professional safety advice or professional care. Please consult your health care provider, attorney, or product manual for professional advice. Products and services reviewed are provided by third parties; we are not responsible in any way for them, nor do we guarantee their functionality, utility, safety, or reliability. Our content is for educational purposes only.

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