Nulo vs Hill's Science Diet

Nulo vs. Hill's Science Diet

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

Guaranteed Analysis: Hill's Science Diet vs. Nulo

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.

Nulo Dog Food vs. Hill's Science Diet Dog Food

Dry Dog Food Nulo Hill's Science Diet
Crude Protein 36.9% 24.5%
Crude Fat 20.3% 14.8%
Crude Fiber 5.2% 4.3%
Wet/Canned Dog Food Nulo Hill's Science Diet
Crude Protein 45.7% 25.8%
Crude Fat 32.4% 17.1%
Crude Fiber 5.5% 3.3%

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.

Nulo dry dog foods clearly provides more protein than Hill's Science Diet. In fact, the difference between the protein content is roughly 12.31%, which is a significant amount. Similarly, Nulo wet dog foods provide significantly more protein than Hill's Science Diet wet foods.


Crude Fat Comparison For Dog Food

Dietary fats serves a multitude of roles in the proper development and function of our canine companions. Here are some of the benefits (not exhaustive):

  • Help produce prostaglandins, which reduce inflammation among other critical functions.
  • Aid in the absorption of fat-soluble vitamins
  • Improve skin and coat health
  • Improve the palatially of your dog's food

Hill's Science Diet dry recipes contain 5.51% less fat than Nulo dry recipes. This difference in fat content is a notable difference between Nulo and Hill's Science Diet. In addition, Nulo wet dog foods also provide more fat than Hill's Science Diet wet foods.


Both brands provide roughly the same amount of crude fiber. For wet dog foods, Nulo typically provides a little more fiber (about 2.16% more).

Nulo Cat Food vs. Hill's Science Diet Cat Food

Dry Cat Food Nulo Hill's Science Diet
Crude Protein 44.3% 35.2%
Crude Fat 19.0% 18.5%
Crude Fiber 5.1% 5.8%
Wet/Canned Cat Food Nulo Hill's Science Diet
Crude Protein 52.8% 38.5%
Crude Fat 25.9% 22.0%
Crude Fiber 4.5% 4.4%

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.

On average, Nulo dry cat food recipes contain 9.11% more protein than Hill's Science Diet recipes. Clearly, there is a significant difference between the protein content of Hill's Science Diet and Nulo. Similarly, Nulo wet cat foods provide significantly more protein than Hill's Science Diet wet foods.


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):

  • Aid in the digestion and absorption of fat-soluble vitamins
  • Improve the health of skin/coat
  • Slow the growth of yeast infections
  • Slow the development and spread of certain type of cancers.
  • Maintain healthy blood pressure

As you can see, Hill's Science Diet and Nulo guarantee a similar amount of crude fat. For wet cat foods, Nulo typically provides a little more fat (about 3.91% more).


Nulo and Hill's Science Diet both provide roughly the same amount of crude fiber. With regards to wet cat food, Nulo and Hill's Science Diet also provide roughly the same amount of crude fiber.

Nulo Pet Food Ingredients vs. Hill's Science Diet Pet Food Ingredients

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

Canola Oil (Preserved With Mixed Tocopherols And Citric Acid)

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

Liver
Caramel
Corn Flour
Iron Oxide
Pea Protein
Pork Plasma
Poultry Fat
Animal Liver
Brewers Rice
Wheat Gluten
Caramel Color
Tomato Pomace
Beef By-Products
Corn Gluten Meal
Pork By-Products
Whole Grain Corn
Whole Grain Wheat
Powdered Cellulose
Dried Tomato Pomace
Pea Protein Concentrate
Soybean Protein Isolate

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 Nulo & Hill's Science Diet?

According to our records, Nulo has never been recalled.

Hill's Science Diet has been recalled once.

  • Jan. 31, 2019: elevated levels of Vitamin D

Price Comparison: Which Brand Is More Expensive?

Dry Dog Food Nulo Hill's Science Diet
Per Pound $15.63 $1.99
Per Calorie $0.0081 $0.0012
Dry Cat Food Nulo Hill's Science Diet
Per Pound $3.10 $2.90
Per Calorie $0.0019 $0.0017
Wet Dog Food Nulo Hill's Science Diet
Per Pound $3.51 $3.24
Per Calorie $0.0063 $0.0078
Wet Cat Food Nulo Hill's Science Diet
Per Pound $5.82 $4.73
Per Calorie $0.0125 $0.0100

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

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

You can purchase Nulo pet foods from the following stores:







Where To Buy Hill's Science Diet Pet Foods

You can purchase Hill's Science Diet pet food products from these retailers:









Type Of Pet Foods Available

Product Nulo Hill's Science Diet
Dry Dog Food 17 Recipes 32 Recipes
Wet Dog Food 19 Recipes 30 Recipes
Dog Treats 8 Treats 15 Treats
Dry Cat Food 11 Recipes 18 Recipes
Wet Cat Food 24 Recipes 39 Recipes
Cat Treats

Compare Pet Food Prices Across Multiple Pet Stores

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