Diamond Naturals (Dry)

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Rating: ★★★★☆

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, three claimed to meet AAFCO nutrient profiles for all life stages and nine for adult maintenance.

The following is a list of recipes available at the time of this review.

  • Diamond Naturals Senior
  • Diamond Naturals Sm Breed Adult Lamb
  • Diamond Naturals Adult Chicken and Rice
  • Diamond Naturals Sm Breed Adult Chicken
  • Diamond Naturals Adult Beef Meal and Rice
  • Diamond Naturals Extreme Athlete (5 stars)
  • Diamond Naturals Small Breed Puppy (4.5 stars)
  • Diamond Naturals Lg Breed Puppy Lamb (3.5 stars)
  • Diamond Naturals Lg Breed Adult Chicken (3.5 stars)
  • Diamond Naturals Lite Lamb Meal and Rice (2.5 stars)
  • Diamond Naturals Adult Lamb Meal and Rice (3.5 stars)
  • Diamond Naturals Lg Breed Adult Lamb Meal (3.5 stars)

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

Protein = 28% | Fat = 17% | Carbs = 48%

Ingredients: Beef meal, peas, cracked pearled barley, ground rice, rice bran, chicken fat (preserved with mixed tocopherols), fish meal, pea protein, dried beet pulp, egg product, 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, Lactobacillus acidophilus, Bifidobacterium lactis, Lactobacillus reuteri, 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 when present indicate controversial ingredients

Estimated Nutrient Content
MethodProteinFatCarbs
Guaranteed Analysis25%15%NA
Dry Matter Basis28%17%48%
Calorie Weighted Basis24%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 is 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 barley. Barley is a starchy carbohydrate supplying fiber and other healthy nutrients. However, aside from its energy content, this cereal grain is of only modest nutritional value to a dog.

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 includes fish meal, another protein-rich meat concentrate.

Fish meal is typically obtained from the “clean, dried, ground tissue of undecomposed whole fish and fish cuttings” of commercial fish operations.1

Unfortunately, this particular item is anonymous. Because various fish contain different types of fats, we would have preferred to have known the source species.

The eighth ingredient is pea protein, what remains of a pea after removing the starchy part of the vegetable.

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 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 five notable exceptions

First, we note the inclusion of 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.

Next, flaxseed is 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.

In addition, 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.

Next, chia seed is 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.

And lastly, this food also 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 looks like an average dry dog food.

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.

The dashboard displays a dry matter protein reading of 28%, a fat level of 17% and estimated carbohydrates of about 48%.

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 protein, flax and chia seeds, this looks like the profile of a kibble containing a moderate amount of meat.

Bottom line?

Diamond Naturals is a plant-based dry dog food using a moderate amount of various named meat meals as its main sources of animal protein, thus earning the brand 4 stars.

Highly recommended.

Please note certain recipes are sometimes given a higher or lower rating based upon our estimate of their total meat content.

Special Alert

Rice ingredients can sometimes contain arsenic. Until the US FDA establishes safe upper levels for arsenic content, pet owners may wish to limit the total amount of rice fed in a dog's daily diet.

A Final Word

The descriptions and analyses expressed in this and every article on this website represent the views and opinions of the author.

Although it's our goal to ensure all the information on this website is correct, we cannot guarantee its completeness or its accuracy; nor can we commit to ensuring all the material is kept up-to-date on a daily basis.

Each review is offered in good faith and has been designed to help you make a more informed decision when buying dog food.

However, our rating system is not intended to suggest feeding a particular product will result in specific health benefits for your pet.

For a better understanding of how we analyze each product, please read our article, "The Problem with Dog Food Reviews".

Remember, no dog food can possibly be appropriate for every life stage, lifestyle or health condition. So, choose wisely. And when in doubt, consult a qualified veterinary professional for help.

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Notes and Updates

01/05/2010 Original review
04/10/2014 Last Update

  1. Association of American Feed Control Officials