Diamond Puppy 31/20 High Protein Formula for All Life Stages Including Puppies and…
- Dry Food
- Bag
- Veterinary Diet
- Dog
- More reviewed than 68%
A high-protein, DHA-supplemented growth formula for puppies and reproducing adult dogs, sold in a large bag suited to bigger households or larger breeds.
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How it ranks among the 155 dry food we track
4.6★ across 6,700 Amazon ratings, Bayesian-smoothed toward the category average.
6,700 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
2,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 155 dry food we track - how the scorecard works · full dry food data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A dry dog food formulated for puppies as well as pregnant and nursing adult dogs, sold in a large 40 pound bag. Diamond lists it under a large-breed recommendation with a small-bites kibble shape.
The 31/20 in the name refers to the protein and fat percentages of the formula. It's built around DHA for brain and vision development in growing puppies, with omega fatty acids and antioxidants added, and Diamond frames it as suitable across the puppy growth period and for dogs that are pregnant or nursing.
- 40 lb bag
- 31/20 protein-to-fat formula
- DHA for brain and vision development
- Small-bites kibble shape
Who it's for
Fits owners with a large-breed puppy, or a pregnant or nursing adult dog, who want a high-protein growth formula in bulk. Less suited to households wanting a small bag to try the food first.
Strengths and trade-offs
Drawn from this product's published specifications.
- High protein and fat levels for growth
- DHA added for brain and vision development
- Suitable for pregnant and nursing dogs too
- Large 40 lb bag
- Large bag size isn't ideal for trying the food first
- Formulated for large breeds, not labeled for toy or small breeds
Performance notes
DHA in the formula supports brain and vision development during the puppy growth window, while the higher protein and fat levels of 31/20 are aimed at the increased energy needs of growth, pregnancy and nursing. The small-bites shape is meant to suit growing or smaller jaws.
Specifications
| Brand | Diamond |
|---|---|
| Model | 120_40_DPP |
| Dimensions & fit | |
| Item Weight | 40 pounds |
| Package Size Name | 40 Pound |
| Dog Breed Size | Large |
| Capacity & performance | |
| Age Range Description | Puppy |
| Included components | |
| Unit Count | 40 pounds |
| Included Components | The nutrition a puppy receives in the first year can influence overall health later in life. Diamond Puppy is formulated with the help of veterinarians and a pet nutritionist to meet the special nutritional needs of rapidly growing puppies. Enhanced with DHA for proper brain and vision development, this recipe includes omega fatty acids, antioxidants and proper levels of protein and fat, to help puppies grow up strong. Diamond Puppy is also suitable for pregnant or nursing adult dogs |
| Other details | |
| Container Type | Bag |
| Animal Food Diet Type | Veterinary Diet |
| Pet Type | Dog |
| Number Of Items | 1 |
| Best Sellers Rank | #2,492 in Pet Supplies (See Top 100 in Pet Supplies) #189 in Dry Dog Food |
| Product Benefits | Supports puppy growth, brain development, and immune health; suitable for pregnant/nursing dogs |
| Animal Food Nutrient Content Claim | High Protein |
| Breed Recommendation | Large Breeds |
| Occasion | Birthday |
| Manufacturer Part Number | 120_40_DPP |
| Flavor | Puppy |
| Item Shape | Rectangular |
| Model Number | 120_40_DPP |
| Item Form | Pellet |
| Recommended Uses For Product | Puppy growth and development, Pregnant and nursing dogs |
| Additional Features | Small Bites |
| Manufacturer | Diamond Pet Foods, Inc. |
| Allergen Information | Allergen-Free |
| Target Species | Dog |
| Customer Reviews | {'ratings_count': '6,749', 'stars': '4.6'} |
| Upc | 074198002405 |
| Item Type Name | Pet Food |
| Special Ingredients | all-natural |
| Asin | B000WFIYQU |
| Specific Uses For Product | coat |
Other Diamond dry food
How it compares
This product against the closest alternatives we track in dry food.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Diamond Puppy 31/20 High Protein Formula for All Life Stages Including Puppies and…This product | 4.6 / 5 | 6,700 | 4.5 / 5 |
| Hill's Science Diet Adult 1-6 Small & Mini Dry Dog FoodHill's | 4.8 / 5 | 26,044 | 4.7 / 5 |
| IAMS Proactive Health Adult Minichunks Premium Dry Dog FoodIAMS | 4.7 / 5 | 31,844 | 4.6 / 5 |
| Blue Buffalo Life Protection Formula Chicken & Brown Rice Adult Dry Dog FoodBlue | 4.7 / 5 | 29,281 | 4.6 / 5 |
| Cesar Small Breed Dry Dog Food for Small DogsCesar | 4.7 / 5 | 19,500 | 4.6 / 5 |
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Questions about the Diamond 120_40_DPP
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What does 31/20 mean in the product name?
It refers to the formula's protein and fat percentages.
Is this food only for puppies?
No, Diamond also recommends it for pregnant and nursing adult dogs, not just puppies.
What breed size is this formulated for?
The listing recommends it for large breeds.