4.5(3,852)Amazon rating$54.993,000+ bought last month
Our verdict
Diamond Naturals Large Breed Puppy is a grain-free lamb and rice formula built specifically for large breed puppies, with added probiotics for digestion, and it holds a respectable 4.5 stars across 3,852 reviews.
Large breed puppies that need a grain-free formula with extra digestive and immune support.
Skip if
You have a small or medium breed puppy, since this bag is formulated and sized for large breeds specifically.
Form Pellet
Flavor Lamb & Rice - Puppy
Benefits Supports Large Breed Puppy Growth And Development
Best for Brain Health, Eye Care, Immune Support, Skin And Coat Health
Breed size Large
Weight 40 Pounds
Priced 48% above the category median ($37.22 across 146 tracked models)
Our scorecard
4.5/5overall
Owner rating4.5/5
4.5 average across 3,852 owner ratings
Popularity2.5/5
3,852 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog food and health supplements we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
This 40 lb bag pairs lamb and rice in a grain-free recipe, which Diamond positions around brain health, eye care, immune support, and skin and coat health for large breed puppies. The formula is also labeled pea-free and additive-free, two callouts that matter if your puppy has had issues with either ingredient before.
Diamond adds probiotics for digestive health and immune support, a common addition across its Naturals line, and prices the 40 lb bag at $54.99. At 4.5 stars across 3,852 reviews and roughly 3,000 bags bought last month, it has steady demand, though its rating sits a bit below some of the other Diamond and Purina puppy formulas in this lineup.
Pros
Grain-free lamb and rice recipe built specifically for large breed puppies
Pea-free and additive-free labeling for puppies sensitive to either
Added probiotics support digestive and immune health
Large 40 lb bag suits a fast growing large breed puppy's appetite
Cons
Rating of 4.5 stars is a touch lower than some other Diamond and Purina picks in this roundup
Only formulated for large breeds, not a fit for small or medium breed puppies
At $54.99 for 40 lbs, it costs more per pound than Diamond's non-grain-free puppy formulas
Specifications
Form
Pellet
Flavor
Lamb & Rice - Puppy
Benefits
Supports Large Breed Puppy Growth And Development
Best for
Brain Health, Eye Care, Immune Support, Skin And Coat Health
Breed size
Large
Weight
40 Pounds
Performance notes
Item form is a pellet kibble, and the formula targets several specific uses at once, brain health, eye care, immune support, and skin and coat health, which reflects the added probiotics and grain-free recipe. The additive-free and pea-free claims are worth noting if your puppy has reacted to either ingredient category in the past.
What buyers say
At 4.5 stars across 3,852 reviews, buyer sentiment is solidly positive, if slightly more mixed than some of the higher-rated puppy formulas in this batch. About 3,000 bags bought in the last month points to consistent, ongoing demand for a large breed grain-free option.
Yes, Diamond Naturals Large Breed Puppy is formulated as a grain-free recipe with lamb and rice as the named ingredients. It is also labeled pea-free and additive-free, which some owners look for alongside a grain-free diet.
Does it include probiotics?
Yes, Diamond lists probiotics among the Additional Features for digestive health and immune support. This is a common addition across Diamond's Naturals puppy line.
Is this suitable for small breed puppies?
No, this specific formula is sized and formulated for large breed puppies. A small or medium breed puppy formula, like Diamond's own Small and Medium Breed Puppy recipe, would be a better nutritional and kibble size match.
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