Diamond vs Purina Pro Plan

Diamond vs. Purina Pro Plan

In this comparison article for Diamond vs Purina Pro Plan, we'll highlight the key differences between these two pet food brands. To properly compare Diamond and Purina Pro Plan, 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 Purina Pro Plan vs Diamond comparison, we've utilized average data to make general comparisons. If you'd like to see individual product reviews, visit our Diamond Review Page or Purina Pro Plan Review Page.

Guaranteed Analysis: Purina Pro Plan vs. Diamond

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.

Diamond Dog Food vs. Purina Pro Plan Dog Food

Dry Dog Food Diamond Purina Pro Plan
Crude Protein 27.6% 31.8%
Crude Fat 16.7% 17.9%
Crude Fiber 4.5% 4.4%
Wet/Canned Dog Food Diamond Purina Pro Plan
Crude Protein 43.9% 47.1%
Crude Fat 25.8% 16.9%
Crude Fiber 4.5% 7.2%

Crude Protein Comparison For Dog Food

Dogs require twenty-two amino acids to sustain life. Twelve of these amino acids are synthesized naturally, the remaining ten are consumed. Protein is the nutrient which provides some or all of these ten essential amino acids.

The table shows that Diamond provides far less protein than Purina Pro Plan. The difference in protein content is roughly 4.21%. For wet dog foods, Purina Pro Plan typically provides a little more protein (about 3.13% more).


Crude Fat Comparison For Dog Food

Like protein, fats are an essential part of a dog's body. Fats are needed for the proper development and function of the canine body.

As you can see, Diamond and Purina Pro Plan guarantee a similar amount of crude fat. For wet dog foods, Diamond provides significantly more fat (about 8.90% more).


Purina Pro Plan and Diamond both provide roughly the same amount of crude fiber. For wet dog foods, Purina Pro Plan typically provides a little more fiber (about 2.61% more).

Diamond Cat Food vs. Purina Pro Plan Cat Food

Dry Cat Food Diamond Purina Pro Plan
Crude Protein 36.7% 45.6%
Crude Fat 17.6% 17.5%
Crude Fiber 5.2% 3.5%
Wet/Canned Cat Food Diamond Purina Pro Plan
Crude Protein 44.7% 51.0%
Crude Fat 22.0% 18.3%
Crude Fiber 6.1% 6.9%

Crude Protein Comparison For Cat Food

Cats require twenty-two amino acids to sustain life. Eleven of these amino acids are synthesized naturally, the remaining eleven are consumed. Protein is the nutrient which provides some or all of these eleven essential amino acids.

On average, Purina Pro Plan dry cat food recipes contain 8.95% more protein than Diamond recipes. Clearly, there is a significant difference between the protein content of Diamond and Purina Pro Plan. For wet cat foods, Purina Pro Plan provides more protein (about 6.26% more).


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):

  • Help transport nutrients across cell membranes
  • Fats produce metabolites, which help control inflammation
  • Maintain healthy blood pressure
  • Slow the growth of yeast infections
  • Fats improve the taste/texture of food.

There is a relatively insignificant difference between the crude fat content of the two brands. For wet cat foods, Diamond typically provides a little more fat (about 3.68% more).


Both brands provide roughly the same amount of crude fiber. With regards to wet cat food, Purina Pro Plan and Diamond also provide roughly the same amount of crude fiber.

Diamond Pet Food Ingredients vs. Purina Pro Plan Pet Food Ingredients

Diamond and Purina Pro Plan both use the following controversial ingredients in many of their products:

Canola Oil
Brewers Rice
Corn Gluten Meal
Powdered Cellulose
Chicken By-Product Meal
Poultry By-Product Meal

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

Meat Meal
Ground Corn
Tomato Pomace
Beef By-Products
Ground Whole Grain Corn
Canola Oil (Preserved With Mixed Tocopherols)

Here are some of the controversial ingredients used only by Purina Pro Plan.

Liver
Poultry
Corn Grits
Canola Meal
Pea Protein
Ground Wheat
Wheat Gluten
Animal Digest
Caramel Color
Garlic Powder
Soybean Flour
Soybean Hulls
Vegetable Oil
Corn Germ Meal
Poultry Giblets
Dried Corn Syrup
Meat By-Products
Whole Grain Corn
Whole Grain Wheat
Ground Yellow Corn
Chicken By-Products
Poultry By-Products
Soybean Protein Isolate
Soybean Protein Concentrate
Animal 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 Diamond.

Menadione Sodium Bisulfite

Here are some of the harmful ingredients used only by Purina Pro Plan.

Bha
Bht
Red 3
Corn Oil
Yellow 5
Added Color
Menadione Sodium Bisulfate Complex
Menadione Sodium Bisulfite Complex
Animal Fat (Preserved With Tbhq And Citric Acid)

Product Safety: Recall History of Diamond & Purina Pro Plan?

Diamond has been recalled once.

  • March 10, 2013: low level of thiamine (Vitamin B1)

Purina Pro Plan has been recalled once.

  • March 9, 2016: Incorrect Vitamins and Minerals

Price Comparison: Which Brand Is More Expensive?

Dry Dog Food Diamond Purina Pro Plan
Per Pound $1.30 $1.99
Per Calorie $0.0008 $0.0011
Dry Cat Food Diamond Purina Pro Plan
Per Pound $1.87 $2.95
Per Calorie $0.0012 $0.0016
Wet Dog Food Diamond Purina Pro Plan
Per Pound $2.10 $2.86
Per Calorie $0.0037 $0.0063
Wet Cat Food Diamond Purina Pro Plan
Per Pound $3.01 $4.97
Per Calorie $0.0058 $0.0113

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 Diamond or Purina Pro Plan, 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 Diamond or Purina Pro Plan will depend on your shopping habits.

Pet owners who use our price comparison feature typically save more than 25% off retail prices for Diamond and Purina Pro Plan. 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 Diamond Pet Foods

You can purchase Diamond pet foods from the following stores:





Where To Buy Purina Pro Plan Pet Foods

You can purchase Purina Pro Plan pet food products from these retailers:





Type Of Pet Foods Available

Product Diamond Purina Pro Plan
Dry Dog Food 27 Recipes 44 Recipes
Wet Dog Food 3 Recipes 30 Recipes
Dog Treats 6 Treats
Dry Cat Food 6 Recipes 23 Recipes
Wet Cat Food 3 Recipes 74 Recipes
Cat Treats

Compare Pet Food Prices Across Multiple Pet Stores

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