The Science of Taste Why Dogs Crave Hill s Science Diet Dog Food

Hills Science Diet Dog Food Review

Is Hill's Science Diet a good dog food?

In this review The Dog Food Advisor takes an in-depth look at Hills Science Diet and rates each of its 6 most important sub-brands.

And well also reveal:

1. Is Hills Science Diet made in the United States?
2. Has Science Diet been recalled?
3. Which flavors and recipes get our top ratings?

But first

Which Hills Science Diet sub-brand is right for you?

Science Diet offers 6 popular sub-brands. Well share what makes each one different. So, you can choose the option that best meets your dogs needs.

Science Diets most popular dry kibble. Each recipe is made with grain and optimized specifically for adult nutrition.

• 11 recipes just for small dogs
• 8 options for large breeds
• 4 recipes for sensitive stomach and skin
• Not recommended for puppies
• 26 recipes (ratings vary)

View all Recipe Ratings

This sub-brand includes Hills best-selling dry and fully balanced puppy recipes.

• Healthy grain-inclusive formula
• 2 large breed puppy foods. Lower risk of hip disease
• 6 recipes (ratings vary)

View all Recipe Ratings

This sub-brand offers Science Diets leading canned food thats optimized for puppies.

• Fully balanced, protein-rich blend
• Not suitable for large breed puppies
• 4 recipes (ratings vary)

View all Recipe Ratings

Hills Adult Plus dry formulas are made with grain. Each recipe is specifically optimized for senior dogs.

• 5 recipes designed for small breed seniors
• 2 formulas for large breed seniors
• 11 dry recipes (ratings vary)

View all Recipe Ratings

Hills Adult Wet formulas are ideal for dogs considered fully grown. They are not suitable for puppies.

• 3 recipes for sensitive stomach and skin
• Not for puppies of any breed
• 15 recipes (ratings vary)

View all Recipe Ratings

As you can tell by its name, this Science Diet dry sub-brand is designed for dogs who need to lose weight. Recipes are all grain-inclusive.

• Reduced caloric-density for controlled weight loss
• Contains L-carnitine to promote steady weight loss
• 4 recipes (ratings vary)

View all Recipe Ratings

Which Hills Science Diet Adult Dry Recipes Get Our Best Ratings?

Hills Science Diet Adult Dog Food receives the Advisors mid-tier rating of 3.5 stars.

The Hills Science Diet Adult product line includes the 26 dry dog foods listed below.

Each recipe includes its AAFCO nutrient profile: Growth (puppy), Maintenance (adult), All Life Stages, Supplemental or Unspecified.

Recipe and Label Analysis

Hills Science Diet Adult Small Paws Chicken Meal and Rice was selected to represent the other products in the line for detailed recipe and nutrient analysis.

Ingredients Analysis

The first ingredient in this dog food is chicken meal. Chicken meal is considered a meat concentrate and contains nearly 300% more protein than fresh chicken.

The second ingredient is brewers rice. Brewers rice is a cereal grain by-product consisting of the small fragments left over after milling whole rice. Aside from the caloric energy it contains, this item is of only modest nutritional value to a dog.

The third ingredient is wheat. Like corn, wheat is an inexpensive and controversial cereal grain. And aside from its energy content, this grain is of only modest nutritional value to a dog.

For this reason, we do not consider wheat a preferred component in any dog food.

The next ingredient is soybean meal, a by-product of soybean oil production more commonly found in farm animal feeds.

Although soybean meal contains 48% protein, this ingredient would be expected to have a lower biological value than meat.

And less costly plant-based products like this can notably boost the total protein reported on the label a factor that must be considered when judging the actual meat content of this dog food.

The fifth item is sorghum. Sorghum (milo) is a starchy cereal grain with a nutrient profile similar to corn.

Since it is gluten-free and boasts a smoother blood sugar behavior than other grains, sorghum may be considered an acceptable non-meat ingredient.

The sixth ingredient is chicken fat. This item is obtained from rendering chicken, a process similar to making soup in which the fat itself is skimmed from the surface of the liquid.

Chicken fat is high in linoleic acid, an omega-6 fatty acid essential for life. Although it doesnt sound very appetizing, chicken fat is actually a quality ingredient.

The seventh ingredient is barley, which is a starchy carbohydrate supplying fiber and other healthy nutrients. However, aside from its energy content, this cereal grain is of only modest nutritional value to a dog.

The next item is corn. Corn is another cereal grain and subject to the same issues as wheat (previously discussed).

After the chicken and pork liver flavors, we find flaxseed, one of the best plant sources of healthy omega-3 fatty acids. Provided theyve first been ground into a meal, flax seeds are also rich in soluble fiber.

However, flaxseed contains about 19% protein, a factor that must be considered when judging the actual meat content of this dog food.

From here, the list goes on to include a number of other items.

But to be realistic, ingredients located this far down the list (other than nutritional supplements) are not likely to affect the overall rating of this Science Diet product.

With 6 notable exceptions

First, soybean oil is red flagged here only due to its rumored (yet unlikely) link to canine food allergies.

However, since soybean oil is high in omega-6 fatty acids and contains no omega-3s, its considered less nutritious than flaxseed oil or a named animal fat.

Next, we find peas. Peas are a quality source of carbohydrates. And like all legumes, theyre rich in natural fiber.

However, peas contain about 25% protein, a factor that must be considered when judging the meat content of this dog food.

In addition, we note the use of taurine, an important amino acid associated with the healthy function of heart muscle. Although taurine is not typically considered essential in canines, some dogs have been shown to be deficient in this critical nutrient.

This recipe also contains sodium selenite, a controversial form of the mineral selenium. Sodium selenite appears to be nutritionally inferior to the more natural source of selenium found in selenium yeast.

We also find no mention of probiotics, friendly bacteria applied to the surface of the kibble after processing to help with digestion.

And lastly, the minerals listed here do not appear to be chelated. And that can make them more difficult to absorb. Chelated minerals are usually associated with higher quality dog foods.

Nutrient Analysis

Based on its ingredients alone, Hills Science Diet Adult looks like an average dry kibble.

The dashboard displays a dry matter protein reading of 25%, a fat level of 16% and estimated carbohydrates of about 51%.

As a group, the brand features an average protein content of 24% and a mean fat level of 15%. Together, these figures suggest a carbohydrate content of 53% for the overall product line.

And a fat-to-protein ratio of about 60%.

Which means this Science Diet product line contains

Below-average protein. Near-average fat. And above-average carbs when compared to other dry dog foods.

When you consider the protein-boosting effect of the soybean meal, flaxseed and peas in this recipe, and the corn gluten meal contained in other recipes, this looks like the profile of a kibble containing just a moderate amount of meat.

Hill's Dog Food Recall History

The following automated list (if present) includes all dog food recalls related to Hill's through April 2024.

No recalls noted.

You can view a complete list of all dog food recalls since 2009 here.

Our Rating of Hill's Science Dog Food

Hills Science Diet Adult is a grain-inclusive dry dog food using a moderate amount of named meat meals as its dominant source of animal protein, thus earning the brand 3.5 stars.

Recommended with Reservations

Who owns Hill's Science Diet and where is it made?

Hills Pet Nutrition is owned by the Colgate-Palmolive Company.

Hills Science Diet products are made in the United States. The company operates major facilities in Bowling Green, Kentucky, Topeka and Emporia, Kansas, Richmond, Indiana as well as the Czech Republic and the Netherlands.

What Do Others Say About Hill's Science Dog Food?

At the time of this update

Chewy customers rate Hills Science Diet Adult Large Breed 4.6 out of 5 stars and 94% say they would recommend it to others.

Heres an actual user review

Sample buyer review Ive tried 2 other brands for our German Shepherd and after 10 months her bathroom business continued to be a mess. So since she was almost a year old I switched her to the Hills Diet. After a couple weeks her poop was noticeably more solid so that we could easily pick it up on walks and in the yard. I think thats a great barometer to see if her body works well with this food and it does!

Read more buyer reviews at Chewy.com

Hills Science Diet Adult Dog Food Review (Canned)

Home Reviews Hills Science Diet Adult Dog Food Review (Canned)

Hills Science Diet Adult Dog Food Review (Canned)

By Mike Sagman

Updated: March 22, 2024

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Which Hills Science Diet Adult Wet Recipes Get Our Best Ratings?

Hills Science Diet Adult wet dog food receives the Advisors mid-tier rating of 3.5 stars.

The Hills Science Diet Adult product line includes the 15 moist dog foods listed below.

Each recipe includes its AAFCO nutrient profile when available Growth (puppy), Maintenance (adult), All Life Stages, Supplemental or Unspecified.

Recipe and Label Analysis

Hills Science Diet Adult Savory Stew with Beef and Vegetables was selected to represent the other products in the line for detailed recipe and nutrient analysis.

Label and nutrient data below are calculated using dry matter basis.

Hill's Science Diet Adult Savory Stew with Beef and Vegetables

Estimated Dry Matter Nutrient Content

Water, beef, pork liver, brown rice, carrots, modified rice starch, wheat flour, dried beet pulp, potato starch, dextrose, chicken fat, egg whites, potatoes, green peas, spinach, hydrolyzed chicken flavor, calcium carbonate, pork plasma, dicalcium phosphate, potassium chloride, flaxseed, soybean oil, caramel color, guar gum, minerals (ferrous sulfate, zinc oxide, copper proteinate, manganese sulfate, potassium iodide), sodium pyrophosphate, disodium phosphate, sodium hexametaphosphate, choline chloride, vitamins (vitamin E supplement, l-ascorbyl-2-polyphosphate (source of vitamin C), thiamine mononitrate, niacin supplement, calcium pantothenate, vitamin B12 supplement, pyridoxine hydrochloride, biotin, vitamin D3 supplement, riboflavin supplement, folic acid), l-lysine, magnesium oxide, taurine

Fiber (estimated dry matter content) = 2.3%

Red denotes any controversial items

Ingredient Analysis

The first ingredient in this dog food is water, which adds nothing but moisture to this food. Water is a routine finding in most canned dog foods.

The second ingredient is beef. Beef is defined as the clean flesh derived from slaughtered cattle and includes skeletal muscle or the muscle tissues of the tongue, diaphragm, heart or esophagus.¹

Beef is naturally rich in all ten essential amino acids required by a dog to sustain life.

The third ingredient is pork liver. This is an organ meat sourced from a named animal and thus considered a beneficial component.

The fourth ingredient is brown rice, a complex carbohydrate that (once cooked) can be fairly easy to digest. However, aside from its natural energy content, rice is of only modest nutritional value to a dog.

The fifth ingredient includes carrots. Carrots are rich in beta-carotene, minerals and dietary fiber.

The sixth ingredient is rice starch, a starchy powder extracted from rice and most likely used here as a thickening agent.

The seventh ingredient is wheat flour, a highly-refined product of wheat milling. Like corn, wheat is an inexpensive and controversial cereal grain of only modest nutritional value to a dog.

For this reason, we do not consider wheat a preferred component in any dog food.

The eighth ingredient is beet pulp. Beet pulp is a controversial ingredient, a high fiber by-product of sugar beet processing.

Some denounce beet pulp as an inexpensive filler while others cite its outstanding intestinal health and blood sugar benefits.

We only call your attention here to the controversy and believe the inclusion of beet pulp in reasonable amounts in most dog foods is entirely acceptable.

From here, the list goes on to include a number of other items.

But to be realistic, ingredients located this far down the list (other than nutritional supplements) are not likely to affect the overall rating of this Hills product.

With 8 notable exceptions

First, we find dextrose, a crystallized form of glucose with a flavor significantly sweeter than common table sugar. It is typically used in pet food as a sweetener and as an agent to help develop browning.

Without knowing a healthy reason for its inclusion here, dextrose (like most sugars) can be considered a nutritionally unnecessary addition to this recipe.

Next, peas are a quality source of carbohydrates. And like all legumes, theyre rich in natural fiber.

However, peas contain about 25% protein, a factor that must be considered when judging the meat content of this dog food.

In addition, flaxseed is one of the best plant sources of healthy omega-3 fatty acids. Provided theyve first been ground into a meal, flax seeds are also rich in soluble fiber.

However, flaxseed contains about 19% protein, a factor that must be considered when judging the actual meat content of this dog food.

Next, soybean oil is red flagged here only due to its rumored (yet unlikely) link to canine food allergies.

However, since soybean oil is high in omega-6 fatty acids and contains no omega-3s, its considered less nutritious than flaxseed oil or a named animal fat.

We also note the inclusion of sodium hexametaphosphate, a man-made industrial polymer with no known nutritive value.

HMP is used in making soap, detergents, water treatment, metal finishing and most likely here to decrease tartar build-up on the teeth.

Although some might disagree, were of the opinion that food is not the place for tartar control chemicals or any other non-nutritive substances.

Next, caramel is a natural coloring agent made by caramelizing carbohydrates. Its used by pet food manufacturers to impart a golden brown tint to the finished product.

However, the concentrated version of this ingredient commonly known as caramel coloring has been more recently considered controversial and found to cause cancer in laboratory animals.²

In any case, even though caramel is considered safe by the FDA, were always disappointed to find any added coloring in a pet food.

Also worth mentioning is the inclusion of taurine, an important amino acid associated with the healthy function of heart muscle. Although taurine is not typically considered essential in canines, some dogs have been shown to be deficient in this critical nutrient.

Since taurine deficiency appears to be more common in pets consuming grain-free diets, we view its presence in this recipe as a positive addition.

And lastly, with the exception of copper, the minerals listed here do not appear to be chelated. And that can make them more difficult to absorb. Chelated minerals are usually associated with higher quality dog foods.

Nutrient Analysis

Based on its ingredients alone, Hills Science Diet Adult looks like a below-average wet product.

The dashboard displays a dry matter protein reading of 26%, a fat level of 20% and estimated carbohydrates of about 46%.

As a group, the brand features an average protein content of 26% and a mean fat level of 18%. Together, these figures suggest a carbohydrate content of 48% for the overall product line.

And a fat-to-protein ratio of about 70%.

Which means this Science Diet product line contains

Near-average protein. Below-average fat. And above-average carbs when compared to a typical wet dog food.

When you consider the protein-boosting effect of the peas and flaxseed in this recipe and the corn gluten and soybean meals and pea protein contained in some others, this looks like the profile of a wet product containing just a moderate amount of meat.

Additionally, with 40% of the total calories in our example coming from fat versus just 22% from protein, some recipes may not be suitable for animals on a low fat diet.

Our Rating of Hills Science Diet Adult Dog Food

Hills Science Diet Adult is a grain-inclusive wet dog food using a moderate amount of named meats and named by-products as its dominant source of animal protein, thus earning the brand 3.5 stars.

Recommended.

Hills Science Diet Adult Food Recall History

The following automated list (if present) includes all dog food recalls related to Hills through April.

You can view a complete list of all dog food recalls since 2009 here.

Get Free Recall Alerts

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More Hills Science Diet Brand Reviews

The following Hills Science Diet dog food reviews are also posted on this website:

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A Final Word

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