Purina ONE SmartBlend Natural Formula

Last updated date: April 13, 2021

DWYM Score

5.6

Purina ONE SmartBlend Natural Formula

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We looked at the top Dry Dog Food and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Dry Dog Food you should buy.

Update as April 23, 2021:
Checkout The Best Dry Dog Food for a detailed review of all the top dry dog food.

Overall Take


In our analysis of 121 expert reviews, the Purina ONE SmartBlend Natural Formula placed 17th when we looked at the top 20 products in the category. For the full ranking, see below.

From The Manufacturer

Discover what makes SmartBlend smart. Purina ONE SmartBlend Natural Lamb & Rice Formula adult dry dog food starts with real lamb as the #1 ingredient to help maintain your dog's strong muscles, including a healthy heart. Each meal is highly-digestible and has a combination of protein-rich tender, meaty morsels and crunchy kibble, providing a taste your dog will love to help ensure he gets the complete and balanced nutrition he needs. This food for dogs has a dual-defense antioxidant blend of vitamins E and A and minerals zinc and selenium to help support his strong immune system while promoting healthy dog skin, and natural sources of glucosamine help support healthy joints. Give him a premium dog food variety that he's sure to love, and give yourself the convenience and quality you love. Order Purina ONE SmartBlend Natural Lamb & Rice, which is carefully formulated by Purina dog experts and nutritionists who are committed to delivering a positive impact on your dog's health.

Expert Reviews

Expert Summarized Score

4.2
6 expert reviews

User Summarized Score

8.4
3,457 user reviews

What experts liked

First, animal digest is a chemically hydrolyzed mixture of animal by-products that is usually sprayed onto the surface of a dry kibble to improve its taste. Next, we find glycerin. Glycerin is used in the food industry as a natural sweetener and as a humectant to help preserve the moisture content of a product.
- Dog Food Advisor
Purina One for dogs avoids the dubious distinction of a 1 star rating because they did manage to put lamb as their first ingredient, and to also include lamb meal as well further on down the list. The inclusion of oatmeal as a high-quality grain is appreciated.
- PetFoodRatings.org
April 11, 2013 | Full review
Some Purina dog foods offer good value. We don’t necessarily like all of the ingredients in the foods but we believe that dogs can eat these foods and live long lives without health problems due to their diet.
- Dog Food Guru
Most of the Purina One dog food formulas contain a protein source as their first ingredient (such as chicken, beef or salmon).
- PetFoodTalk.com
October 25, 2018 | Full review
The brand Purina One does produce some other foods that have had recalls before. None of them were too serious, so I don’t think that worrying about food safety and recalls is too big of a concern.
- Here Pup

What experts didn't like

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.1 In any case, even though caramel is considered safe by the FDA, we’re always disappointed to find any added coloring in a pet food. That’s because coloring is used to make the product more appealing to humans — not your dog. And lastly, this dog food contains menadione, a controversial form of vitamin K linked to liver toxicity, allergies and the abnormal break-down of red blood cells.
- Dog Food Advisor
Now, let’s get into where it goes wrong. Purina must have a deal with Budweiser because they seem to love using brewers rice in their foods. If they were using whole grain rice that was NOT an alcohol side-product, I’d be raving. However, they insist on going the cheap and non-nutritional way. Then, there are two corn products in a row. Trust me when I say that two corn products in a row or even 2 corn products in the same food is never, ever a good thing.
- PetFoodRatings.org
April 11, 2013 | Full review
Dog food experts will tell you that grains are not as easy for dogs to digest as meat proteins. They’ll also tell you that poultry is not as good as a specified kind of poultry such as chicken, turkey, or duck. And they’ll say that by-products from meat are not as good as the actual meat or named organs. These are the dog food “rules” today. In short, dog food that is closer to human food is considered more desirable for your dog and most Purina dog foods are definitely dog food. They are not substitute human foods.
- Dog Food Guru
Minus: - Supplements can be sourced from China; risk of poor quality control. - The mineral listings do not read to be chelated or proteinated (for better mineral absorption). - Contains Sodium Selenite – potential risk form of selenium. - Contains copper sulfate, supplement recently linked to liver disease. - This food does not appear to contain probiotics (friendly bacteria that benefits the intestinal system and in turn the immune system of the pet). - Contains animal fat, animal digest and poultry by-product meal; ingredients determined by the FDA to be possibly contain euthanized animals. - Contains grain ingredients prone to deadly molds. - Contains genetically modified (GM) grain ingredients linked to health risks. - Contains Menadione Sodium Bisulfite Complex (source of Vitamin K activity); a controversial synthetic Vitamin K. - Contains caramel color; component of this ingredient is linked to cancer.
- Petsumer Report
Some of the other ingredients contained in many Purina One dog food formulas include corn gluten meal, brewers rice, poultry by-products, salt, whole-grain corn, soybean meal and animal digest. Some of these ingredients, such as wheat, are often classified as “fillers”, and may contribute to a higher carbohydrate content than is suitable for a dog’s digestive system.
- PetFoodTalk.com
October 25, 2018 | Full review
This particular formula is not grain-free. The ingredients include whole grain corn, whole grain wheat, corn gluten meal, and soybean meal. All of these grains are essentially filler and are less than ideal for dogs to eat because they don’t provide much nutritional value.
- Here Pup

An Overview On Dry Dog Food

Dogs are like members of our families, so of course, we want to keep them as healthy and happy as possible. The foundation for that is proper nutrition. A consistent, high-quality diet is the key to keeping your dog looking and feeling great. Feeding your dog the best dog food will keep them functioning at their best and can ward off chronic diseases, leading to a longer life. Dry dog food is very common and convenient, as it does not require refrigeration.

Kristin Forte/Simplemost Media

There’s a ton of different types of dry dog food out there, so the choices can be overwhelming.  You should look for dog food that is labeled as “complete and balanced,” which means the food contains the minimum amount of all the nutrients necessary for dogs. This standard is regulated by the Association of American Feed Control Officials. Keep in mind that buzzwords like “premium” and “immune supporting” are not regulated and should not carry much weight in your choice.

Kristin Forte/Simplemost Media

Just as with human food, you want to make sure your dog is eating a diet with real, whole foods and one that is free from artificial preservatives and additives. Make sure your dog’s food contains a high-quality animal protein source, like lamb, chicken or turkey. Leading brands, such as Orijen Tundra, contain multiple protein sources, including chicken, turkey, flounder and egg.

Kristin Forte/Simplemost Media

Many veterinarians recommend avoiding dog food that contains grains like corn, wheat and soy, as dogs do not need these starches. Although many healthy dog foods contain carbohydrates in the form of fruit and vegetables, brands like Taste of the Wild tout their grain-free recipe.

Other healthy ingredients include probiotics, which benefit the intestinal and immune systems, and minerals. Minerals should be chelated or proteinated for maximum absorption.

Kristin Forte/Simplemost Media

Some dogs need special diets, and diets should be adjusted for puppies and senior dogs. The right dog food for your pet will meet all of their needs and come at an affordable price.

The Dry Dog Food Buying Guide

  • Make sure to feed your dog the proper amount. Overfeeding your dog ups their risk of obesity and associated health problems. There are some formulas to determine how much you should be feeding your dog depending on their size and breed, and your veterinarian can also provide you with guidance.
  • Puppies need small, frequent meals, while adult dogs can eat just one to two meals per day. Some dogs are grazers, meaning that they will eat small amounts throughout the day, but many more will eat all the food that is given to them at a time, which is why it’s important not to overfeed them.
  • Price is an important factor in dog food, as it’s one of the major ongoing expenses associated with being a pet owner. A higher price tag does not necessarily translate to a superior product.
  • To keep your dog’s food fresh, make sure it is sealed. Some brands come with resealable tops, or you can put it in an airtight container, preferably made of glass or stainless steel. Make sure you keep your dog food in a cool, dry place. Moisture and heat can compromise the food’s safety and quality.
  • Just like human food, dog food has an expiration date. Dry dog food is generally good for one year. Never give your dog food that smells or looks spoiled.
  • It’s important that the food you choose is a good fit for your dog. If your dog rejects a food or it makes them sick, it may not be the optimal choice for them. Consult with your veterinarian to find the type of food that’s best for your pet.
  • Make sure you wash the bowls your dog eats and drinks from regularly, ideally every day. Once a week, they should be sanitized with a bleach solution. Stainless steel bowls are the easiest to keep clean.