Extreme Dog Fuel receives the Advisor’s second-lowest tier rating of 2.5 stars.
The Extreme Dog Fuel product line includes two dry dog foods, each claimed to meet AAFCO nutrient profiles for adult maintenance.
The following is a list of recipes available at the time of this review.
- Extreme Dog Fuel 26-18 Professional Formula (3 stars)
- Extreme Dog Fuel 24-18 Performance Formula (2 stars)
Extreme Dog Fuel 24-18 Performance Formula was selected to represent both products in the line for this review.
Extreme Dog Fuel 24-18 Performance
Dry Dog Food
Estimated Dry Matter Nutrient Content
Ingredients: Chicken by-product meal, ground corn, brown rice, chicken fat (preserved with mixed tocopherols), rice bran, meat and bone meal, beet pulp, ground wheat, corn gluten meal, brewers dried yeast, salt, potassium chloride, liver digest, vitamin E supplement, lecithin, vitamin B12 supplement, choline chloride, rice flour, garlic, zinc oxide, ascorbic acid, copper sulfate, manganese sulfate, manganous oxide, biotin, vitamin A acetate, copper oxide, calcium pantothenate, niacin, thiamine mononitrate, riboflavin supplement, pyridoxine hydrochloride (vitamin B6), potassium iodide, folic acid, sodium selenite, menadione sodium bisulfite complex (a source of vitamin K activity), vitamin D3 supplement, tetra sodium phosphate, Yucca schidigera extract
Fiber (estimated dry matter content) = 4.3%
Red items when present indicate controversial ingredients
|Estimated Nutrient Content|
|Dry Matter Basis||27%||20%||45%|
|Calorie Weighted Basis||22%||40%||38%|
The first ingredient in this dog food is chicken by-product meal, a dry rendered product of slaughterhouse waste. It’s made from what’s left of a slaughtered chicken after all the prime cuts have been removed.
In addition to organs (the nourishing part), this stuff can contain almost anything — feet, beaks, undeveloped eggs — anything except feathers.
On the brighter side, by-product meals are meat concentrates and contain nearly 300% more protein than fresh chicken.
In any case, although this item contains all the amino acids a dog needs, we consider chicken by-products an inexpensive, lower quality ingredient.
The second ingredient is corn. Corn is an inexpensive and controversial cereal grain. And aside from its energy content, this grain is of only modest nutritional value to a dog.
For this reason, we do not consider corn a preferred component in any dog food.
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 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 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 meat and bone meal, a dry “rendered product from mammal tissues, including bone, exclusive of any added blood, hair, hoof, horn, hide trimmings, manure, stomach and rumen contents”.1
Meat and bone meal can have a lower digestibility than most other meat meals.
Scientists believe this decreased absorption may be due to the ingredient’s higher ash and lower essential amino acid content.2
What’s worse, this particular item is anonymous. Since there’s no mention of a specific animal, this ingredient could come from almost anywhere: spoiled supermarket meat, roadkill, dead, diseased or dying livestock — even euthanized farm animals.
Even though meat and bone meals are still considered protein-rich meat concentrates, we do not consider a generic ingredient like this a quality item.
The seventh 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.
The eighth ingredient is wheat. Wheat is another cereal grain and subject to the same issues as corn (previously discussed).
The ninth ingredient is corn gluten meal. Gluten is the rubbery residue remaining once corn has had most of its starchy carbohydrate washed out of it.
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.
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 brewers yeast which 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, liver digest is made from the enzymatic breakdown of liver tissue. Digests are commonly used by pet food manufacturers as flavor enhancers.
Normally, a digest can be considered an acceptable ingredient. However, in this case, the digest is of lower quality — made from the organ tissue of an unnamed (generic) source species.
Next, garlic can be a controversial item. Although many favor the ingredient for its claimed health benefits, garlic has been linked to Heinz body anemia in dogs.3
In addition, garlic is also officially classified as “toxic to dogs” by the Poison Control Center of the ASPCA.4
So, even when used in only small amounts, one must weigh the questionable benefits of feeding garlic against its proven tendency to cause subclinical damage to the red blood cells of the animal.5
In addition, we find no mention of probiotics, friendly bacteria applied to the surface of the kibble after processing to help with digestion.
Next, 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.
And lastly, this dog food contains menadione, a controversial form of vitamin K linked to liver toxicity, allergies and the abnormal break-down of red blood cells.
Since vitamin K isn’t required by AAFCO in either of its dog food nutrient profiles, we question the use of this substance in any canine formulation.
Extreme Dog Fuel
The Bottom Line
Judging by its ingredients alone, Extreme Dog Fuel looks like a below-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 20%. Together, these figures suggest a carbohydrate content of 44% for the overall product line.
And a fat-to-protein ratio of about 72%.
Near-average protein. Above-average fat. And below-average carbs when compared to a typical dry dog food.
When you consider the protein-boosting effect of the corn gluten meal and brewers dried yeast, this looks like the profile of a kibble containing a moderate amount of meat.
Extreme Dog Fuel is a plant-based dry dog food using a moderate amount of chicken by-product meal as its main source of animal protein, thus earning the brand 2.5 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.
A Final Word
The descriptions and analyses expressed in this and every article on this website represent the views and opinions of the author.
The Dog Food Advisor does not test dog food products.
We rely almost entirely on the integrity of the information posted by each company on its website. As such, the accuracy of every review is directly dependent upon the quality of the test results from any specific batch of food a company chooses to publish.
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, due to the biological uniqueness of every animal, none of our ratings are intended to suggest feeding a particular product will result in a specific dietary response or health benefit 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
11/18/2014 Last Update
- Association of American Feed Control Officials, 2008 Edition ↩
- Shirley RB and Parsons CM, Effect of Ash Content on Protein Quality of Meat and Bone Meal, Department of Animal Sciences, University of Illinois, Poultry Science, 2001 80: 626-632 ↩
- Yamato et al, Heinz Body hemolytic anemia with eccentrocytosis from ingestion of Chinese chive (Allium tuberosum) and garlic (Allium sativum) in a dog, Journal of the American Animal Hospital Association 41:68-73 (2005) ↩
- Garlic, Poison Control Center, ASPCA ↩
- Sharon Gwaltney-Brant DVM, Veterinary Toxicologist, Vice President and Medical Director, ASPCA Animal Poison Control Center in an interview with Dr. Bernadine D. Cruz for Pet Life Radio, Pets Have a Real Taste for Danger ↩