Diamond Naturals Skin & Coat All Life Stages Dog Salmon & Potato Formula vs Purina Pro Plan Sensitive Skin & Stomach Large Breed Salmon & Rice Formula
Order follows the Universal Score — the same deterministic engine, the same rules, for every product. Brands can't pay for placement.
The scores
Bowlmark scores are independent opinions based on published label information and cited references. They are educational, not veterinary advice, and no substitute for your vet — especially for medical conditions or prescription diets.
Pillar by pillar
Weighted pillar contributions from each product's stored score — nutritional adequacy, ingredient quality, additives & processing, transparency.
| Metric | Diamond Naturals | Purina Pro Plan |
|---|---|---|
| Nutritional adequacy | 35 | 35 |
| Ingredient quality | 24 | 24 |
| Additives & processing | 20 | 17 |
| Transparency | 6 | 9 |
Guaranteed analysis
As printed on each label; dry-matter protein removes the moisture so wet and dry read on the same basis.
| Metric | Diamond Naturals | Purina Pro Plan |
|---|---|---|
| Protein | 25% | 26% |
| Fat | 14% | 12% |
| Fiber | 5.5% | 4.5% |
| Moisture | 10% | 12% |
| Protein (dry-matter) | 27.8% | 29.5% |
First five ingredients
Diamond Naturals
- Salmon
- fish meal
- potatoes
- lentils
- peas
Purina Pro Plan
- Salmon
- rice
- barley
- oat meal
- fish meal
Flags on the label
Diamond Naturals
No warning flags on this label.
Purina Pro Plan
- Synthetic vitamin K3 — questioned safety margin vs natural K sources
Cite this page
Bowlmark. "Diamond Naturals Skin & Coat All Life Stages Dog Salmon & Potato Formula vs Purina Pro Plan Sensitive Skin & Stomach Large Breed Salmon & Rice Formula." https://www.bowlmark.com/compare/diamond-naturals-skin-and-coat-all-life-stages-dog-salmon-and-potato-formula-vs-purina-pro-plan-sensitive-skin-and-stomach-large-breed-salmon-and-rice-formula
- Engine
- Methodology engine v1.1.0 · config 13c99e2f
- Verified
- Last verified September 5, 2026
The engine and config above are the ones stamped on this page's score — the exact pair that produced the number shown.