Diamond Naturals Dog Food receives the Advisor’s second-highest tier rating of 4 stars.
The Diamond Naturals product line includes 13 dry dog foods.
Each recipe below includes its related AAFCO nutrient profile when available on the product’s official webpage: Growth, Maintenance, All Life Stages, Supplemental or Unspecified.
Important: Because many websites do not reliably specify which Growth or All Life Stages recipes are safe for large breed puppies, we do not include that data in this report. Be sure to check actual packaging for that information.
Use links below to compare price and package size information at an online retailer.
- Diamond Naturals Senior Dog [M]
- Diamond Naturals Light Adult Dog (2 stars) [M]
- Diamond Naturals Small Breed Adult Lamb and Rice [M]
- Diamond Naturals Extreme Athlete (5 stars) [M]
- Diamond Naturals Adult Beef Meal and Rice [M]
- Diamond Naturals Small Breed Puppy (4.5 stars) [A]
- Diamond Naturals All Life Stages Chicken and Rice [A]
- Diamond Naturals Large Breed Puppy (4.5 stars) [A]
- Diamond Naturals Adult Lamb Meal and Rice [M]
- Diamond Naturals Small Breed Adult Chicken and Rice (4.5 stars) [M]
- Diamond Naturals Large Breed Adult Chicken and Rice [M]
- Diamond Naturals Large Breed Adult Lamb Meal and Rice (3.5 stars) [M]
- Diamond Naturals All Life Stages Skin and Coat Grain Free [A]
Diamond Naturals Adult Beef Meal and Rice was selected to represent the other products in the line for this review.
Diamond Naturals Adult Beef Meal and Rice
Dry Dog Food
Estimated Dry Matter Nutrient Content
Ingredients: Beef meal, peas, ground white rice, egg product, dried yeast, rice bran, chicken fat (preserved with mixed tocopherols), pea flour, dried beet pulp, natural flavor, flaxseed, potassium chloride, salt, dl-methionine, choline chloride, taurine, dried chicory root, kale, chia seed, pumpkin, blueberries, oranges, quinoa, dried kelp, coconut, spinach, carrots, papaya, Yucca schidigera extract, dried Lactobacillus plantarum fermentation product, dried Bacillus subtilis fermentation product, dried Lactobacillus acidophilus fermentation product, dried Enterococcus faecium fermentation product, dried Bifidobacterium animalis fermentation product, vitamin E supplement, beta carotene, iron proteinate, zinc proteinate, copper proteinate, ferrous sulfate, zinc sulfate, copper sulfate, potassium iodide, thiamine mononitrate (vitamin B1), manganese proteinate, manganous oxide, ascorbic acid, vitamin A supplement, biotin, niacin, calcium pantothenate, manganese sulfate, sodium selenite, pyridoxine hydrochloride (vitamin B6), vitamin B12 supplement, riboflavin (vitamin B2), vitamin D supplement, folic acid
Fiber (estimated dry matter content) = 5%
Red denotes controversial item
|Estimated Nutrient Content|
|Dry Matter Basis||28%||17%||48%|
|Calorie Weighted Basis||24%||35%||41%|
The first ingredient in this dog food is beef meal. Beef meal is considered a meat concentrate and contains nearly 300% more protein than fresh beef.
The second ingredient includes peas. Peas are a quality source of carbohydrates. And like all legumes, they’re rich in natural fiber.
However, peas contain about 25% protein, a factor that must be considered when judging the meat content of this dog food.
The third ingredient is ground white rice, another name for rice flour. Ground rice is made from either white or brown rice and is considered a gluten-free substitute for wheat flour.
The fourth ingredient is egg product, an unspecified (wet or dry?) form of shell-free eggs. Quality can vary significantly. Lower grade egg product can even come from commercial hatcheries — from eggs that have failed to hatch.
In any case, eggs are easy to digest and have an exceptionally high biological value.
The fifth ingredient is dried yeast, which can be a controversial item. Dried yeast contains about 45% protein and is rich in other healthy nutrients.
Fans believe yeast repels fleas and supports the immune system.
Critics argue yeast ingredients can be linked to allergies. This may be true, but (like all allergies) only if your particular dog is allergic to the yeast itself.
What’s more, a vocal minority insist yeast can increase the risk of developing the life-threatening condition known as bloat. However, this is something we’ve not been able to scientifically verify.
In any case, unless your dog is specifically allergic to it, we feel yeast should be considered a nutritious addition.
The sixth ingredient is rice bran, a healthy by-product of milling whole grain rice. The bran is the fiber-rich outer layer of the grain containing starch, protein, fat as well as vitamins and minerals.
The seventh ingredient is chicken fat. Chicken fat is obtained from rendering chicken, a process similar to making soup in which the fat itself is skimmed from the surface of the liquid.
Chicken fat is high in linoleic acid, an omega-6 fatty acid essential for life. Although it doesn’t sound very appetizing, chicken fat is actually a quality ingredient.
The eighth ingredient is pea flour, a powder made from roasted yellow peas. Pea flour contains as much as 25% protein, a factor that must be considered when judging the meat content of this dog food.
The ninth ingredient is beet pulp. Beet pulp is a controversial ingredient, a high fiber by-product of sugar beet processing.
Some denounce beet pulp as an inexpensive filler while others cite its outstanding intestinal health and blood sugar benefits.
We only call your attention here to the controversy and believe the inclusion of beet pulp in reasonable amounts in most dog foods is entirely acceptable.
From here, the list goes on to include a number of other items.
But to be realistic, ingredients located this far down the list (other than nutritional supplements) are not likely to affect the overall rating of this product.
With six notable exceptions…
First, we find flaxseed, one of the best plant sources of healthy omega-3 fatty acids. Provided they’ve first been ground into a meal, flax seeds are also rich in soluble fiber.
However, flaxseed contains about 19% protein, a factor that must be considered when judging the actual meat content of this dog food.
Next, we note the inclusion of chia seed, an edible seed nutritionally similar to flax or sesame. Provided they’re first ground into a meal, chia seeds are rich in both omega-3 fatty acids as well as dietary fiber.
However, chia seeds contain about 17% protein, a factor that must be considered when judging the meat content of this dog food.
In addition, we find quinoa in this recipe. Quinoa (pronounced keen-wah) is not a true cereal grain but a plant prized for its gluten-free seeds.
Compared to most other grain-type ingredients, it is high in protein (about 12-18%), dietary fiber and other healthy nutrients.
Next, we also note the use of coconut. Depending upon the quality of the raw material, coconut is rich in medium chain fatty acids.
Medium-chain triglycerides have been shown to improve cognitive function in older dogs.1
Because of its proven safety2 as well as its potential to help in the treatment of canine cognitive dysfunction syndrome (CDS) and chronic skin disorders, MCT can be considered a positive addition to this recipe.
Next, chicory root is rich in inulin, a starch-like compound made up of repeating units of carbohydrates and found in certain roots and tubers.
Not only is inulin a natural source of soluble dietary fiber, it’s also a prebiotic used to promote the growth of healthy bacteria in a dog’s digestive tract.
And lastly, this food contains chelated minerals, minerals that have been chemically attached to protein. This makes them easier to absorb. Chelated minerals are usually found in better dog foods.
Diamond Naturals Dog Food Review
Judging by its ingredients alone, Diamond Naturals Dog Food looks like an above-average dry product.
But ingredient quality by itself cannot tell the whole story. We still need to estimate the product’s meat content before determining a final rating.
As a group, the brand features an average protein content of 28% and a mean fat level of 17%. Together, these figures suggest a carbohydrate content of 47% for the overall product line.
And a fat-to-protein ratio of about 59%.
Near-average protein. Near-average fat. And near-average carbs when compared to a typical dry dog food.
When you consider the protein-boosting effect of the peas, pea flour, dried yeast, quinoa, flax and chia seeds, this looks like the profile of a kibble containing a moderate amount of meat.
Diamond Naturals contains both grain-inclusive and grain-free dry dog foods using a moderate amount of named meat meals as its main source of animal protein, thus earning the brand 4 stars.
Please note certain recipes are sometimes given a higher or lower rating based upon our estimate of their total meat content and (when appropriate) their fat-to-protein ratios.
Diamond Dog Food
The following list (if present) includes all dog food recalls since 2009 directly related to Diamond. If there are no recalls listed in this section, we have not yet reported any events.
- Diamond Issues Yet Another Dog Food Recall (5/18/2012)
- Diamond Dog Food Recall Widens (4/30/2012)
- Diamond Dog Food Recall (4/6/2012)
Readers interested in Diamond Natural dry dog food may also wish to check out these popular pages, too…
Important FDA Alert
The FDA is investigating a potential link between diet and heart disease in dogs. Click here for details.
A Final Word
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In any case, it is always our intention to remain objective, impartial and unbiased when conducting our analysis.
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Notes and Updates
07/14/2019 Last Update
- Pan Y et al, Dietary supplementation with medium-chain TAG has long-lasting cognition-enhancing effects in aged dogs, British Journal of Nutrition, Volume 103, Issue 12, June 2010, pp 1746-1754 ↩
- Matulka RA et al, Lack of toxicity by medium chain triglycerides (MCT) in canines during a 90-day feeding study,Food Chem Toxicol, Jan 2009, 47(1) 35-9. ↩