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Nulo Medal Series (Dry)
Nulo Naturals Dog Food receives the Advisor’s second-highest tier rating of 4.5 stars.
The Nulo Naturals product line includes three dry dog foods, each claimed to meet AAFCO nutrient profiles for all life stages.
The following is a list of recipes available at the time of this review.
- Nulo Naturals Lamb and Brown Rice
- Nulo Naturals Salmon and Brown Rice
- Nulo Naturals Chicken and Brown Rice
Nulo Naturals Chicken and Brown Rice was selected to represent the other products in the line for this review.
Nulo Naturals Chicken and Brown Rice
Dry Dog Food
Estimated Dry Matter Nutrient Content
Ingredients: Deboned chicken, chicken meal, brown rice, oatmeal, whole peas, turkey meal, chicken fat (preserved with mixed tocopherols & citric acid), dried sweet potatoes, pea fiber, brewers dried yeast, natural flavor, ground whole flaxseed, dried egg product, dried tomatoes, dried carrots, dried apples, dried blueberries, menhaden fish oil, dried chicory root, salt, calcium carbonate, choline chloride, potassium chloride, zinc sulfate, vitamin E supplement, ferrous sulfate, niacin, copper sulfate, thiamine mononitrate (source of vitamin B1), calcium pantothenate, vitamin A supplement, manganous oxide, pyridoxine hydrochloride (source of vitamin B6), sodium selenite, riboflavin, vitamin D3 supplement, biotin, vitamin B12 supplement, calcium iodate, folic acid, rosemary extract
Fiber (estimated dry matter content) = 4.4%
Red items when present indicate controversial ingredients
|Estimated Nutrient Content|
|Dry Matter Basis||30%||16%||46%|
|Calorie Weighted Basis||26%||33%||41%|
The first ingredient in this dog food is chicken. Although it is a quality item, raw chicken contains about 80% water. After cooking, most of that moisture is lost, reducing the meat content to just a fraction of its original weight.
After processing, this item would probably account for a smaller part of the total content of the finished product.
The second ingredient is chicken meal. Chicken meal is considered a meat concentrate and contains nearly 300% more protein than fresh chicken.
The third ingredient is brown rice, a complex carbohydrate that (once cooked) can be fairly easy to digest. However, aside from its natural energy content, rice is of only modest nutritional value to a dog.
The fourth ingredient is oatmeal, a whole-grain product made from coarsely ground oats. Oatmeal is naturally rich in B-vitamins, dietary fiber and can be (depending upon its level of purity) gluten-free.
The fifth 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 sixth ingredient includes turkey meal, another protein-rich meat concentrate.
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 dried sweet potato. Sweet potatoes are a gluten-free source of complex carbohydrates in a dog food. They are naturally rich in dietary fiber and beta carotene.
The ninth ingredient is pea fiber, a mixture of both soluble and insoluble dietary fiber derived from pea hulls. Aside from the usual benefits of fiber, this agricultural by-product provides no nutritional value to a dog.
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, brewers yeast can be a controversial item. Although it’s a by-product of the beer making process, this ingredient is rich in minerals and 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.
In addition, a vocal minority insists yeast can increase the risk of developing the life-threatening condition known as bloat. However, this is a claim we’ve not been able to scientifically verify.
In any case, unless your dog is specifically allergic to it, yeast can still be considered a nutritious additive.
What’s more noteworthy here is that brewers yeast contains about 48% protein, a factor that must be considered when judging the actual meat content of this dog food.
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, this food contains dried egg product, a dehydrated 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, we find menhaden oil. Menhaden are small ocean fish related to herring. Their oil is naturally rich in the prized EPA and DHA type of omega-3 fatty acids, two high quality fats boasting the highest bio-availability to both dogs and humans.
What’s more, in their mid-depth habitat, menhaden are not as likely to be exposed to mercury contamination as is typical with deep water species.
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.
And lastly, the minerals listed here do not appear to be chelated. And that can make them more difficult to absorb. Non-chelated minerals are usually associated with lower quality dog foods.
Nulo Naturals Dog Food
The Bottom Line
Judging by its ingredients alone, Nulo Naturals looks like an above-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.
As a group, the brand features an average protein content of 30% and a mean fat level of 16%. Together, these figures suggest a carbohydrate content of 46% for the overall product line.
And a fat-to-protein ratio of about 52%.
Near-average protein. Near-average fat. And below-average carbs when compared to a typical dry dog food.
Even when you consider the protein-boosting effect of the peas, brewers yeast and flaxseed, this looks like the profile of a kibble containing a moderate amount of meat.
Nulo Naturals Dog Food is a plant-based kibble using a moderate amount of named meats and meat meals as its main sources of animal protein, thus earning the brand 4.5 stars.
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
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Notes and Updates
09/28/2010 Original review
04/10/2014 Last Update