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Merrick vs Supreme Source

Merrick vs. Supreme Source

In this comparison article for Merrick vs Supreme Source, we'll highlight the key differences between these two pet food brands. To properly compare Merrick and Supreme Source, we'll use up-to-date nutritional and price information.

There are many factors to consider when choosing the best pet food brand for your pet. Factors such as ingredient quality, guaranteed analysis, product safety, brand history, and cost are among the most important factors to consider.

Throughout this Supreme Source vs Merrick comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our Merrick Review Page or Supreme Source Review Page.

Guaranteed Analysis: Supreme Source vs. Merrick

According to AAFCO, all pet food labels must provide a guaranteed analysis of nutrient content. The analysis must provide guaranteed minimum percentages of crude protein and crude fat, and maximum percentages of crude fiber and moisture.

All percentages used in this comparison are averages reported on a dry matter basis.

Merrick Dog Food vs. Supreme Source Dog Food

Dry Dog Food Merrick Supreme Source
Crude Protein 37.2% 28.9%
Crude Fat 17.0% 12.8%
Crude Fiber 4.3% 9.0%

Crude Protein Comparison For Dog Food

Protein is an extremely important part of your dog's diet. Without sufficient protein, dogs can develop a wide-range of serious health problems.

When you look at the average percentages of crude protein for dry dog food, it's clear that Merrick provides significantly more protein. On average, Merrick guarantees about 8.32% more protein than Supreme Source.


Crude Fat Comparison For Dog Food

Fats are an absolutely vital component of a balanced canine diet. Not only do fats provide energy, but they also serve important roles in the normal development and function of your dog's body. For example, fats help dogs produce prostaglandins, which reduce inflammation among many other significant functions.

Our analysis shows that Merrick guarantees 4.19% more fat than Supreme Source dry dog food recipes.


There is a relatively large difference between the fiber content of Supreme Source and Merrick. On average, Merrick dry dog food recipes contain 4.75% less fiber than Supreme Source recipes.

Merrick Cat Food vs. Supreme Source Cat Food

Dry Cat Food Merrick Supreme Source
Crude Protein 40.7% 38.9%
Crude Fat 15.7% 16.7%
Crude Fiber 5.0% 5%

Crude Protein Comparison For Cat Food

Protein is an extremely important part of your cat's diet. Without sufficient protein, cats can develop a wide-range of serious health problems.

Supreme Source and Merrick both provide roughly the same amount of crude protein.


Crude Fat Comparison For Cat Food

There are many ways in which dietary fat contributes to the overall health of our feline friends. Here is a short list of benefits provided by fats (not exhaustive):

  • Fats help with the digestion and absorption of fat-soluble vitamins
  • Reduce inflammation associated with arthritis
  • Slow the growth of yeast infections
  • Prevent or reduce the likelihood of certain heart problems.
  • Aid in the development of the retina and visual cortex.

There is a relatively insignificant difference between the crude fat content of the two brands.


Both brands provide roughly the same amount of crude fiber.

Merrick Pet Food Ingredients vs. Supreme Source Pet Food Ingredients

Merrick and Supreme Source both use the following controversial ingredients in many of their products:

Pea Protein

Here are some of the controversial ingredients used only by Merrick.

Garlic
Canola Oil
Caramel Color
Meaty Femur Bone
Powdered Cellulose
Canola Oil (Preserved With Mixed Tocopherols)

Here are some of the controversial ingredients used only by Supreme Source.

Tomato Pomace
Poultry Fat (Preserved With Mixed Tocopherols)

We believe that certain pet food ingredients are linked to adverse health affects; these ingredients are classified as harmful.

Here are some of the harmful ingredients used only by Supreme Source.

Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Merrick & Supreme Source?

Merrick has been recalled 6 times.

  • Jan. 28, 2011: Salmonella
  • Aug. 8, 2011: Salmonella
  • July 2, 2010: Salmonella
  • Aug. 3, 2010: Salmonella
  • Aug. 13, 2010: Salmonella
  • May 23, 2018: elevated levels of beef thyroid hormone

According to our records, Supreme Source has never been recalled.

Price Comparison: Which Brand Is More Expensive?

Dry Dog Food Merrick Supreme Source
Per Pound $4.86 $1.77
Per Calorie $0.0029 $0.0012
Dry Cat Food Merrick Supreme Source
Per Pound $7.40 $2.84
Per Calorie $0.0043 $0.0017

The average cost-per-lb is heavily influenced by the varying amounts of moisture present in each brand's food products (wet vs. dry food, dry vs. freeze-dried food, etc). However, the average cost-per-kcal eliminates the influence of moisture. Therefore, the average cost-per-kcal is the better metric to consider.

If you'd like to calculate the average cost-per-day or cost-pet-year of feeding Merrick or Supreme Source, input your pet's weight into our cost analyzer widget.

Averages price data can identify whether or not there exists a significant price difference between two brands. However, the actual price that you'll pay for Merrick or Supreme Source will depend on your shopping habits.

Pet owners who use our price comparison feature typically save more than 25% off retail prices for Merrick and Supreme Source. In addition, we currently have some great coupons for our readers.


Disclosure: PawDiet has an affiliate relationship with stores featured (or linked-to) in this article. We are compensated for referring customers. Thank you for shopping with our retail partners!

Where To Buy Merrick Pet Foods

You can purchase Merrick pet foods from the following stores:


172 Recipes In-Stock Today

158 Recipes In-Stock Today

143 Recipes In-Stock Today

21 Recipes In-Stock Today

Where To Buy Supreme Source Pet Foods

You can purchase Supreme Source pet food products from these retailers:


10 Recipes In-Stock Today

Type Of Pet Foods Available

Product Merrick Supreme Source
Dry Dog Food 38 Recipes 4 Recipes
Wet Dog Food 51 Recipes
Dog Treats 29 Treats 4 Treats
Dry Cat Food 17 Recipes 2 Recipes
Wet Cat Food 45 Recipes
Cat Treats 3 Treats

Compare Pet Food Prices Across Multiple Pet Stores