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Iams vs Under The Sun

Iams vs. Under The Sun

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

Guaranteed Analysis: Under The Sun vs. Iams

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.

Iams Dog Food vs. Under The Sun Dog Food

Dry Dog Food Iams Under The Sun
Crude Protein 27.8% 27.5%
Crude Fat 15.1% 12.1%
Crude Fiber 5.1% 4.6%
Wet/Canned Dog Food Iams Under The Sun
Crude Protein 42.0% 41.1%
Crude Fat 24.0% 24.5%
Crude Fiber 5.8% 6.1%

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.

Under The Sun and Iams both provide roughly the same amount of crude protein. With regards to wet dog food, Iams and Under The Sun also provide roughly the same amount of crude protein.


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.

According to our data, Iams guarantees 3.04% more fat than Under The Sun. Although this difference is relatively small, it's still a notable difference. For wet dog foods, Under The Sun and Iams provide roughly the same amount of fat.


There is a relatively insignificant difference between the crude fiber content of the two brands. With regards to wet dog food, Under The Sun and Iams also provide roughly the same amount of crude fiber.

Iams Cat Food vs. Under The Sun Cat Food

Wet/Canned Cat Food Iams Under The Sun
Crude Protein 50.5% 46.5%
Crude Fat 19.0% 22.3%
Crude Fiber 14.7% 6.7%

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.

The table shows that Under The Sun provides far less protein than Iams. The difference in protein content is roughly 4.05%.


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.

If you look at the average percentages of crude fat, you'll notice that Under The Sun typically guarantees 3.35% more fat. This is a fairly small difference between Under The Sun and Iams, but still worth mentioning.


Iams Pet Food Ingredients vs. Under The Sun Pet Food Ingredients

Iams and Under The Sun both use the following controversial ingredients in many of their products:

Canola Oil
Pea Protein

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

Liver
Caramel
Beet Pulp
Corn Meal
Corn Grits
Iron Oxide
Canola Meal
Fish Digest
Ground Corn
Brewers Rice
Wheat Gluten
Caramel Color
Tomato Pomace
Vegetable Oil
Feeding Oatmeal
Poultry Giblets
Beef By-Products
Corn Gluten Meal
Meat By-Products
Ground Yellow Corn
Powdered Cellulose
Chicken By-Products
Dried Meat By-Products
Chicken By-Product Meal
Ground Whole Grain Corn
Poultry By-Product Meal
Soybean Protein Isolate
Animal Fat (Preserved With Mixed Tocopherols)
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.

Iams and Under The Sun both use the following harmful ingredients in many of their products:

Menadione Sodium Bisulfite Complex

Here are some of the harmful ingredients used only by Iams.

Blue 2
Red 40
Corn Oil
Yellow 5
Yellow 6
Ethoxyquin
Added Color
Menadione Dimethylpyrimidinol Bisulfite

Here are some of the harmful ingredients used only by Under The Sun.

Menadione Sodium Bisulfate Complex

Product Safety: Recall History of Iams & Under The Sun?

Iams has been recalled 2 times.

  • Aug. 14, 2013: Salmonella
  • July 30, 2010: Salmonella

According to our records, Under The Sun has never been recalled.

Price Comparison: Which Brand Is More Expensive?

Dry Dog Food Iams Under The Sun
Per Pound $1.34 $2.07
Per Calorie $0.0008 $0.0014
Wet Dog Food Iams Under The Sun
Per Pound $1.72 $5.25
Per Calorie $0.0035 $0.0110
Wet Cat Food Iams Under The Sun
Per Pound $5.72 $6.34
Per Calorie $0.0110 $0.0141

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 Iams or Under The Sun, 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 Iams or Under The Sun will depend on your shopping habits.

Pet owners who use our price comparison feature typically save more than 25% off retail prices for Iams and Under The Sun. 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 Iams Pet Foods

You can purchase Iams pet foods from the following stores:


39 Recipes In-Stock Today

28 Recipes In-Stock Today

28 Recipes In-Stock Today

1 Recipes In-Stock Today

Where To Buy Under The Sun Pet Foods

You can purchase Under The Sun pet food products from these retailers:


20 Recipes In-Stock Today

14 Recipes In-Stock Today

20 Recipes In-Stock Today

Type Of Pet Foods Available

Product Iams Under The Sun
Dry Dog Food 29 Recipes 7 Recipes
Wet Dog Food 10 Recipes 8 Recipes
Dog Treats
Dry Cat Food 12 Recipes
Wet Cat Food 31 Recipes 9 Recipes
Cat Treats 2 Treats

Compare Pet Food Prices Across Multiple Pet Stores