It's well known that proper nutrition is a huge factor when it comes to a dog's health, life expectancy, and general well-being.
A lot of dog foods are being presented as "the best dog food", so finding really good food for your four-legged friend might be a frustrating task.
As always, we try to help you, fellow dog owners. In our comparisons, we carefully analyzed ingredients and nutritional data labels to help you make an educated decision.
Some of the dog foods' characteristics we took into account:
- Crude Protein, fat, and fiber contents
- Top ingredients
- Vitamin and mineral contents
- Omega-3 and Omega-6 contents
- Users' rating
- Price
- Variety of flavors
We'll go in-depth around these dog food traits, so let's get busy.
Diamond Naturals and Purina ONE SmartBlend come in several varieties, and for the sake of this comparison, we'll use Diamond Naturals Chicken & Rice Formula and Purina ONE Natural SmartBlend Lamb & Rice Formula.
- Meat as the first ingredient
- High protein formula
- Dry Food
- Healthy Omega-6 to Omega-3 ratio
- US formulated
- Meat as the first ingredient
- High protein formula
- Dry Food
- Healthy Omega-6 to Omega-3 ratio
- Contains glucosamine
- US formulated
Diamond Naturals Chicken & Rice Formula
Diamond Naturals is also available in the following flavors:
- Beef Meal & Rice
- Lamb Meal & Rice
Give your dog Diamond Naturals Chicken & Rice Formula to provide the quality nutrients it needs.
Superfoods and guaranteed probiotics are included to every Diamond Naturals mix to boost the growth and general health of your beloved pet.
This dry dog food recipe is appropriate for dogs of all life stages and contains actual ingredients like kale, blueberries, and coconut along with real fruits and vegetables like cage-free chicken as the first component.
It gives your pet animal protein, minerals, omega fatty acids to support good skin and a lustrous coat, antioxidants for overall well-being from head to tail, and other nutrients. Diamond can assist your friend in achieving a healthy, well-balanced diet.
We reviewed all Diamond Naturals dry dog foods, and created a list of best Diamond Nautral dog foods, so if you are anything interested in Diamond Naturals formulas, be sure to check it.
To conclude this intro, we will share that Diamond Naturals's ratings are 4.4/5 and 4.6/5 on Chewy and Amazon, respectively.
Purina ONE Natural SmartBlend Lamb & Rice Formula
Real lamb is the first component in Purina ONE Natural SmartBlend Lamb & Rice Formula, which supports the maintenance of your dog's strong muscles, including a healthy heart.
Each meal is made up of a blend of protein-rich, soft, meaty morsels and crunchy kibble, making it highly digestible and giving your dog a tasty way to acquire the full and balanced nutrition he requires.
This dog food has a dual-defense antioxidant combination of vitamins E and A, minerals zinc and selenium, and natural sources of glucosamine to support his strong immune system while encouraging healthy dog skin.
Give him a premium dog food selection he's sure to adore, and treat yourself to the quality and convenience you desire.
We reviewed all Purina dry dog foods, and created a list of best Purina dog foods, so if you are anything interested in Purina formulas, be sure to check it.
What do customers think?
Purina ONE SmartBlend has an average rating of 4.7/5 on Chewy, while its Amazon rating is 4.8/5.
Diamond Naturals vs Purina ONE SmartBlend In-Depth Comparison
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| Characteristic | ||
| Manufacturer | Diamond | Purina |
| Full Name | Diamond Naturals Chicken & Rice Formula | Purina ONE Natural SmartBlend Lamb & Rice Formula |
| Lifestage | Adult | Adult |
| Type | Dry Food | Dry Food |
| Shop Now At Chewy | Shop Now At Chewy | |
|
||
| Characteristic | ||
| Manufacturer | Purina | |
| Full Name | Purina ONE Natural SmartBlend Lamb & Rice Formula | |
| Lifestage | Adult | |
| Type | Dry Food | |
| Shop Now At Chewy | ||
Diamond Naturals vs Purina ONE SmartBlend: Ingredients and Nutritional Data
First and foremost, it's important to see how Diamond Naturals and Purina ONE SmartBlend compare when it comes to macronutrients: crude protein, fat, and fiber.
Protein Content
Protein is a vital component of a dog's food, and it serves several roles in your dog's body, including muscle development and tissue repair, as well as forming skin cells, growing hair, tendons, ligaments, and hormone production.
Both Diamond Naturals and Purina ONE SmartBlend are considered a high-protein foods, and the table below shows the details on their amounts, based on their guaranteed analysis.
| Nutritional Data | Diamond Naturals | Purina ONE SmartBlend |
| Crude Protein | 26.0% | 26.0% |
| Crude Fat | 16.0% | 16.0% |
| Crude Fiber | 2.5% | 3.0% |
| Moisture | 10.0% | 12.0% |
| Energy | 3708 kcal/kg | 3972 kcal/kg |
| Shop Now At Chewy | Shop Now At Chewy |
| Nutritional Data | Purina ONE SmartBlend |
| Crude Protein | 26.0% |
| Crude Fat | 16.0% |
| Crude Fiber | 3.0% |
| Moisture | 12.0% |
| Energy | 3972 kcal/kg |
| Shop Now At Chewy |
As you could see, Diamond Naturals and Purina ONE SmartBlend have a same amount of crude protein. Dry foods usually contain between 20% and 30% of protein, while wet foods contain between 5% and 8%.
A higher amount of protein that comes from high-quality, animal sources is usually better, but some studies also suggested that too much protein might also be harmful.
The bottom line?
Quality is much more important than quantity, so it's the perfect time to check the most abundant ingredients in Diamond Naturals and Purina ONE SmartBlend.
The first five ingredients in Diamond Naturals: Chicken, Chicken Meal, Whole Grain Brown Rice, Cracked Pearled Barley, and White Rice.
The first five ingredients in Purina ONE SmartBlend: Lamb (Source of Glucosamine), Rice Flour, Whole Grain Corn, Whole Grain Wheat, and Chicken By-Product Meal (Source of Glucosamine).
Ingredients are listed in descending order of weight, so both Diamond Naturals and Purina ONE SmartBlend have meat as the first and most abundant ingredient which is a good thing.
Fat Content
Fats are essential macronutrients, and they provide energy and are important for the development and function of body cells, nerves, muscles, and body tissues.
In fact, fats are a more concentrated form of energy than proteins and carbohydrates. They provide 9 calories per gram, while the latter provides only 4 calories per gram.
If your dog is obese or prone to obesity, you should probably look for low-fat foods that contain less than 10% of fat.
So let's take a closer look:
Interestingly, Diamond Naturals and Purina ONE SmartBlend have the same amount of fat, 16.0%.
| Fat Content | Diamond Naturals | Purina ONE SmartBlend |
| Crude Fat | 16.0% | 16.0% |
| Omega-3 Fatty Acids | 0.4% | 0.2% |
| Omega-6 Fatty Acids | 2.5% | 1.6% |
| Omega-6 To Omega-3 Ratio | 6.3:1 | 8:1 |
| Shop Now At Chewy | Shop Now At Chewy |
| Fat Content | Purina ONE SmartBlend |
| Crude Fat | 16.0% |
| Omega-3 Fatty Acids | 0.2% |
| Omega-6 Fatty Acids | 1.6% |
| Omega-6 To Omega-3 Ratio | 8:1 |
| Shop Now At Chewy |
Another important thing to consider is Omega-3s and Omega-6s contents. These essential fatty acids can't be made by the dog, which means that they must be obtained from food.
These fatty acids reduce inflammation, prevent blood clotting, improve brain development, and play an important role in heart and joint health.
Most high-quality foods will provide enough Omega-3 and Omega-6 fatty acids, and the same goes with Diamond Naturals and Purina ONE SmartBlend so you don't need to worry too much.
But there's a catch.
The omega-6 to Omega-3 ratio is very important for a dog's health. There is no perfect ratio, but The National Research Council (NRC) recommends a ratio of 2.6:1 to 26:1 Omega-6 to Omega-3.
With ratios of 6.3:1 and 8:1 of Diamond Naturals and Purina ONE SmartBlend respectively, these foods fall into the NRC's recommended range.
Diamond Naturals vs Purina ONE SmartBlend: Allergens and Grains
Grain-free dog foods are getting more popular, as some dogs have an allergy to certain grains, most commonly soy, wheat, and corn. So are Naturals and ONE SmartBlend completely or partly grain-free?
If you're looking for completely grain-free dog food, Diamond Naturals and Purina ONE SmartBlend probably wouldn't work for you. Please check the table below to see more detailed information on grain content.
| Common Allergens | Diamond Naturals | Purina ONE SmartBlend |
| Grain-free | ❌ | ❌ |
| Soy Free | ✔️ | ❌ |
| Corn Free | ✔️ | ❌ |
| Wheat Free | ✔️ | ❌ |
| Shop Now At Chewy | Shop Now At Chewy |
| Common Allergens | Purina ONE SmartBlend |
| Grain-free | ❌ |
| Soy Free | ❌ |
| Corn Free | ❌ |
| Wheat Free | ❌ |
| Shop Now At Chewy |
Diamond Naturals vs Purina ONE SmartBlend: Price
Dog foods come in many different sizes, and besides the bag size, the price depends on the retailer. To compare prices, we always try to compare the same or similar bag sizes, and then we calculate the size per pound. We use Chewy prices, as they are the largest online pet shop in the US.
Luckily, Diamond Naturals and Purina ONE SmartBlend are both available in 40lbs bag, so it's easy to compare them.
Diamond Naturals's retail price for a 40lbs bag is $46.99, while Purina ONE SmartBlend is currently selling for $49.99.
If you prefer price per pound, it's $1.17 per pound of Diamond Naturals, and $1.25 per pound of Purina ONE SmartBlend.
Final World
We hope that our comparison helped you to choose the best dog food for your dog.
If we helped you to make a decision what dog food is best for your dog, use the following links to buy it on Chewy, and save 35% on auto-ship orders:
If you would like to make new comparison, please visit our Compare Dog Foods page.
