Purina ONE Natural, High Protein Cat Food, Tuna Recipe in Sauce vs Purina Pro Plan Sensitive Skin & Stomach Tuna & Oat Meal
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 | Purina Pro Plan | Purina ONE |
|---|---|---|
| Nutritional adequacy | 35 | 35 |
| Ingredient quality | 20 | 21 |
| Additives & processing | 17 | 15 |
| Transparency | 7 | 7 |
Guaranteed analysis
As printed on each label; dry-matter protein removes the moisture so wet and dry read on the same basis.
| Metric | Purina Pro Plan | Purina ONE |
|---|---|---|
| Protein | 10% | 11% |
| Fat | 4% | 2% |
| Fiber | 1.5% | 1.5% |
| Moisture | 78% | 80% |
| Protein (dry-matter) | 45.5% | 55% |
First five ingredients
Purina Pro Plan
- Tuna
- meat by-products
- water
- ocean whitefish
- oat meal
Purina ONE
- Tuna broth
- tuna
- wheat gluten
- chicken
- pork lungs
Flags on the label
Purina Pro Plan
- Unnamed animal ingredient ("meat by-product")
- Synthetic vitamin K3 — questioned safety margin vs natural K sources
Purina ONE
- Synthetic vitamin K3 — questioned safety margin vs natural K sources
Cite this page
Bowlmark. "Purina Pro Plan Sensitive Skin & Stomach Tuna & Oat Meal vs Purina ONE Natural, High Protein Cat Food, Tuna Recipe in Sauce." https://www.bowlmark.com/compare/purina-one-natural-high-protein-cat-food-tuna-recipe-in-sauce-vs-purina-pro-plan-sensitive-skin-and-stomach-tuna-and-oat-meal
- Engine
- Methodology engine v1.1.0 · config 13c99e2f
- Verified
- Last verified September 6, 2026
The engine and config above are the ones stamped on this page's score — the exact pair that produced the number shown.