Diamond Naturals Dog Food receives the Advisor’s second-highest tier rating of 4 stars.
The Diamond Naturals product line includes 12 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.
- Diamond Naturals Senior Dog [M]
- Diamond Naturals Lite Adult Dog (2 stars) [M]
- Diamond Naturals Small Breed Adult Lamb [M]
- Diamond Naturals Extreme Athlete (4.5 stars) [M]
- Diamond Naturals Small Breed Puppy (4.5 stars) [A]
- Diamond Naturals All Life Stages Chicken and Rice [A]
- Diamond Naturals Large Breed Puppy Lamb (3 stars) [A]
- Diamond Naturals Adult Beef Meal and Rice (3.5 stars) [M]
- Diamond Naturals Adult Lamb Meal and Rice (3.5 stars) [M]
- Diamond Naturals Large Breed Adult Chicken (3.5 stars) [M]
- Diamond Naturals Small Breed Adult Chicken (4.5 stars) [M]
- Diamond Naturals Large Breed Adult Lamb Meal (3.5 stars) [M]
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, pea flour, ground white rice, rice bran, chicken fat (preserved with mixed tocopherols), egg product, potato protein, dried beet pulp, natural flavor, flaxseed, potassium chloride, salt, choline chloride, dried chicory root, kale, chia seed, pumpkin, blueberries, oranges, quinoa, dried kelp, coconut, spinach, carrots, papaya, Yucca schidigera extract, dried Lactobacillus acidophilus fermentation product, dried Bifidobacterium animalis fermentation product, dried Lactobacillus reuteri 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) = 4.4%
Red items indicate controversial ingredients
|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 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 fourth ingredient is ground 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 fifth 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 sixth 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 seventh 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 eighth ingredient is potato protein, the dry residue remaining after removing the starchy part of a potato.
Even though it contains over 80% protein, this ingredient would be expected to have a lower biological value than meat.
And less costly plant-based products like this can notably boost the total protein reported on the label — a factor that must be considered when judging the actual 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.
We also find chicory root. Chicory 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
The Bottom Line
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, potato protein, quinoa, flax and chia seeds, this looks like the profile of a kibble containing a moderate amount of meat.
Diamond Naturals Dog Food is a plant-based dry dog food using a moderate amount of named meats as its main sources 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 this product line. 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)
To learn why our ratings have nothing to do with a product’s recall history, please visit our Dog Food Recalls FAQ page.
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A Final Word
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Notes and Updates
04/08/2017 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. ↩