is hills a good brand of 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

Best and worst dog food brands

There are hundreds of dog food options available, from dry to grain-free to raw, but which ones will have your furry friend licking the bowl clean?

We surveyed 2,304 dog owners about the pet food they buy to uncover the brands that customers (and their dogs) love and which offer the best value for money.

See how brands such as Burns, Harringtons and Royal Canin are rated by customers, as well as supermarket options from the likes of Aldi and Lidl.

Eat well, live better, stay healthy sign up for our free monthly Food & Health newsletter for all the latest insights delivered straight to your inbox

Dog food brands rated

Our top-scoring dog food brand achieved an impressive customer score of 82%, and five-star ratings for how much pets liked it, as well as their wellbeing when eating it.

At the other end of the scale, two brands scored less than 60%, with just two stars out of five each for how healthy the dog seemed when eating food from that brand.

Which? members can log in now to unlock the full results. If you're not yet a member, join Which? today to get instant access to this and thousands of other reviews.

Make sure your furry friend is covered see our guide to the best pet insurance for your dog

How to choose the best dog food for your pet

Deciphering all the pet nutrition information on the internet can seem like an impossible task. It can range from confusing to completely contradictory.

We spoke to real pet nutrition researchers to understand what actually matters. Good news: it isnt as complicated as it seems.

The most important part of choosing a food is actually monitoring your pet, said Dr Teresa Hollands, senior lecturer in veterinary nutrition at the University of Surrey. If you're feeding your pet a particular brand of food, and they have plenty of energy and seem well in themselves, then you are on the right track.

Dr Nigel Kendall, lecturer in nutrition at the University of Nottingham, agreed: If your pet is on completely the wrong diet, then there will be physical signs.

Signs that your pet is eating a nutritious diet, and the right food for their needs, include:

• good overall health
• plenty of energy
• good sleeping habits
• regularly passing firm stools
• maintaining a healthy weight.

Also a cat owner? See our guide to thebest and worst cat food brands

How to feed your dog the best and healthiest diet

As well as choosing the right food, you can also maximise the nutritional value of your pets diet by feeding them in the right way.

We spoke with Dr David Gardner, professor of physiology at the University of Nottingham, to find out more:

Choosing a complete food

Start by making sure you are feeding your pet a complete food, he said. Thats really important, but it isnt always clearly labelled.

Complete foods are designed to give your pet all the nutrients they need, so you can feed them the same thing every day without causing a nutritional imbalance or deficit.

Weighing your pet food

David also highlighted the importance of weighing your pets food every time you feed them.

Remember, you may not notice that you're overfeeding your pet if you increase the size of their feed very slightly each day.

Varying your pet food

If you want to take additional steps to ensure your pet is getting the best nutrition, David also suggested varying the food you give them, provided that this doesnt upset their stomach.

These changes could be as small as varying the flavour of food that you give to your pet.

If you buy a bag of lamb dog food one month, try the chicken next time, David suggested.

If you do want to try changing the type or brand of your pet food, remember to do so gradually. Your pet's meal should be no more than 25% new food for the first couple of days, increasing over the course of a week.

Dogs can be fussy, so know that varying your pet food is not essential. The main thing is that they eat and enjoy their food and that it's nutritionally complete.

Best dog harnesses see our pick of the best and worst as tested by dog owners

Is wet or dry dog food better?

Both wet and dry foods can be nutritionally complete, meaning that they should contain all the nutrients your pet needs. That means there is no significant advantage to either food type.

David recommended feeding your pet a mixture of wet and dry food.

Evidence suggests that there are slight differences in the nutritional composition of wet and dry food. That means you are going to cover more nutrients if you mix them together.

If you want to feed your dog exclusively one type of food, then wet food does tend to be more appealing. However, it is often more expensive and it can predispose pets to dental disease.

In contrast, dry food is beneficial to dogs teeth and gums, and it is usually easier and cheaper to use and store. Just make sure that your dog has access to plenty of fresh water, as they will not be getting hydration from their food.

Best food and drinkwe've rated the tastiest food for humans too. Discover our top picks, from chicken soup to red wine

Can dogs be vegan?

Yes, provided you are careful about the type of food you give them.

There are commercial dog foods available that are vegetarian or vegan and nutritionally complete.

Some people may want to prepare homemade vegetarian or vegan meals for their dog, which is not typically recommended by experts.

This is because evidence suggests that homemade food (including meat-based diets) is typically not nutritionally complete even when people follow recipes labelled as such.

Is raw food good for dogs?

Raw pet food has become more popular over the past few years, especially for dogs, but experts don't generally recommend it.

I would not recommend a raw food diet due to the risk to human health, says Dr Heather Bacon, dean of veterinary medicine at the University of Central Lancashire.

Bacteria present in raw meat can include salmonella, listeria, campylobacter and E-coli. These cause significant illness in humans and animals, particularly young, old and immune-compromised individuals.

These can be spread around the house during food preparation and eating. They can also be passed from animals to humans if your pet kisses your face after eating.

All of these bacteria are destroyed when meat is correctly cooked.

How much should my dog weigh?

According to a 2022 survey by UK Pet Food, 50% of dogs (and 43% of cats) are overweight or obese.

Your pet being overweight can have a huge impact on its quality of life, including limiting their ability to exercise or sleep properly. According to the RSPCA, it also predisposes them to illness including:

• diabetes
• heart disease
• cancer.

How to if tell your dog is overweight

Dr Teresa Hollands recommends an easy method for checking your pets weight.

Create a fist with your hand, and feel your knuckles with your fingers, she said. If your pets ribs feel like that, they are underweight.

Then lay your hand flat, and feel your knuckles again. If their ribs feel like that, they are the perfect weight.

Finally, keep your hand flat, turn your hand over, and run your fingers over the pads on your palm at the base of your fingers. If their ribs feel like that, they are overweight.

Physical signs that your dog is overweight

• Very thin(more than 20% below ideal body weight) Ribs, spine and hip bones easily seen (in short-haired pets), obvious loss of muscle bulk, no fat can be felt under the skin.
• Underweight (10-20% below ideal body weight)Ribs, spine and hip bones easily seen, obvious waist and abdominal tuck, very little fat can be felt under the skin.
• IdealRibs, spine and hip bones easily felt, visible waist and abdominal tuck, small amount of fat can be felt.
• Overweight(10-15% above ideal body weight): Ribs, spine and hip bones are hard to feel, waist barely visible, broad back, layer of fat on belly and at base of tail.
• Obese (more than 15% above ideal body weight)Ribs, spine and hip bones extremely difficult to feel under a thick layer of fat, no waist can be seen and belly may droop significantly, heavy fat pads on lower back and at base of the tail.

How we rated dog food brands

To uncover the best and worst dog food brands, in July 2023 we surveyed 2,304 Which? members who had bought dog food recently, and asked all about their experiences with their chosen brand.

We asked them to rate the brand on various attributes including value for money, how their dog responded to the food, and its perceived wellbeing on the food.

Overall customer scores are based on how satisfied customers were with the brand overall and whether or not they would recommend it.

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