Hill's Science Diet vs Blue Buffalo

Hill's Science Diet vs. Blue Buffalo

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

Guaranteed Analysis: Blue Buffalo vs. Hill's Science Diet

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.

Hill's Science Diet Dog Food vs. Blue Buffalo Dog Food

Dry Dog Food Hill's Science Diet Blue Buffalo
Crude Protein 24.5% 28.5%
Crude Fat 14.8% 15.0%
Crude Fiber 4.3% 7.1%
Wet/Canned Dog Food Hill's Science Diet Blue Buffalo
Crude Protein 25.8% 40.4%
Crude Fat 17.1% 25.4%
Crude Fiber 3.3% 7.5%

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.

If you look at the average percentages of crude protein, you'll notice that Blue Buffalo typically guarantees 3.99% more protein. This is a fairly small difference between Blue Buffalo and Hill's Science Diet, but still worth mentioning. In addition, Blue Buffalo wet dog foods also provide more protein than Hill's Science Diet wet foods.


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, Hill's Science Diet and Blue Buffalo guarantee a similar amount of crude fat. For wet dog foods, Blue Buffalo provides significantly more fat (about 8.36% more).


According to our data, Blue Buffalo guarantees 2.79% more fiber than Hill's Science Diet. Although this difference is relatively small, it's still a notable difference. In addition, Blue Buffalo wet dog foods also provide more fiber than Hill's Science Diet wet foods.

Hill's Science Diet Cat Food vs. Blue Buffalo Cat Food

Dry Cat Food Hill's Science Diet Blue Buffalo
Crude Protein 35.2% 37.2%
Crude Fat 18.5% 16.4%
Crude Fiber 5.8% 6.5%
Wet/Canned Cat Food Hill's Science Diet Blue Buffalo
Crude Protein 38.5% 45.4%
Crude Fat 22.0% 24.9%
Crude Fiber 4.4% 8.2%

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.

Hill's Science Diet and Blue Buffalo both provide roughly the same amount of crude protein. For wet cat foods, Blue Buffalo provides more protein (about 6.87% 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 small difference between the fat content of Hill's Science Diet and Blue Buffalo. We can see that Hill's Science Diet guarantees about 2.13% more fat than Blue Buffalo. In addition, Blue Buffalo wet cat foods also provide more fat than Hill's Science Diet wet foods.


There is a relatively insignificant difference between the crude fiber content of the two brands. For wet cat foods, Blue Buffalo typically provides a little more fiber (about 3.85% more).

Hill's Science Diet Pet Food Ingredients vs. Blue Buffalo Pet Food Ingredients

Hill's Science Diet and Blue Buffalo both use the following controversial ingredients in many of their products:

Caramel
Pea Protein
Caramel Color
Tomato Pomace
Powdered Cellulose
Dried Tomato Pomace
Pea Protein Concentrate

Here are some of the controversial ingredients used only by Hill's Science Diet.

Liver
Corn Flour
Iron Oxide
Pork Plasma
Poultry Fat
Animal Liver
Brewers Rice
Wheat Gluten
Beef By-Products
Corn Gluten Meal
Pork By-Products
Whole Grain Corn
Whole Grain Wheat
Soybean Protein Isolate

Here are some of the controversial ingredients used only by Blue Buffalo.

Garlic
Canola Oil

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 Hill's Science Diet.

Menadione Sodium Bisulfite Complex

Product Safety: Recall History of Hill's Science Diet & Blue Buffalo?

According to our records, Hill's Science Diet has never been recalled.

Blue Buffalo has been recalled 9 times.

  • Nov. 25, 2015: Salmonella
  • Nov. 6, 2015: Presence of Propylene Glycol
  • May 31, 2016: Mold
  • March 18, 2017: elevated beef throid hormone
  • Feb. 14, 2017: presence of aluminum
  • March 3, 2017: Foil Seal Packaging Problem
  • Oct. 8, 2010: toxic levels of vitamin D
  • April 19, 2007: Melamine
  • April 26, 2007: Melamine

Price Comparison: Which Brand Is More Expensive?

Dry Dog Food Hill's Science Diet Blue Buffalo
Per Pound $1.92 $2.49
Per Calorie $0.0012 $0.0015
Dry Cat Food Hill's Science Diet Blue Buffalo
Per Pound $2.80 $3.71
Per Calorie $0.0017 $0.0022
Wet Dog Food Hill's Science Diet Blue Buffalo
Per Pound $3.04 $4.33
Per Calorie $0.0074 $0.0090
Wet Cat Food Hill's Science Diet Blue Buffalo
Per Pound $4.37 $5.45
Per Calorie $0.0085 $0.0107

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 Hill's Science Diet or Blue Buffalo, 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 Hill's Science Diet or Blue Buffalo will depend on your shopping habits.

Pet owners who use our price comparison feature typically save more than 25% off retail prices for Hill's Science Diet and Blue Buffalo. 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 Hill's Science Diet Pet Foods

You can purchase Hill's Science Diet pet foods from the following stores:








Where To Buy Blue Buffalo Pet Foods

You can purchase Blue Buffalo pet food products from these retailers:











Type Of Pet Foods Available

Product Hill's Science Diet Blue Buffalo
Dry Dog Food 32 Recipes 85 Recipes
Wet Dog Food 30 Recipes 101 Recipes
Dog Treats 15 Treats 51 Treats
Dry Cat Food 18 Recipes 40 Recipes
Wet Cat Food 39 Recipes 47 Recipes
Cat Treats 15 Treats

Compare Pet Food Prices Across Multiple Pet Stores

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