18 cans compared

Purina ONE vs Weruva

Both brands land close on carbs: 5.6% of calories for the typical Purina ONE can and 5.8% for Weruva. Purina ONE has 5 of 8 recipes under the 10% low-carb line; Weruva has 7 of 10. Below, every number is worked out the same way from each can’s label.

Purina ONE

Weruva

Purina ONE vs Weruva at a glance

Typical values are the middle recipe of each brand. Shares are of calories, so textures compare fairly. Marked cells show the better value where the gap is meaningful.

	Purina ONE	Weruva
Cans we compare	8	10
Typical carbs, % of calories	5.6%	5.8%
Carb range	3.9–13.6%	0–12.4%
Recipes under 10% carbs	5 of 8	7 of 10
Typical protein, % of calories	45%	66%
Typical fat, % of calories	50%	24%
Calories per ounce	31	20
Calories per can	70–105	51–78
Recipes with published phosphorus	0 of 8	6 of 10
Typical phosphorus, mg per 100 kcal	—	284 mg
Confirmed for kittens	7 of 8	0 of 10
Chicken-free recipes	0 of 8	5 of 10
Fish-free recipes	0 of 8	4 of 10
Textures	Pâté, Flaked	Flaked, Chunks in gravy, Shreds in broth, Pâté

Lowest-carb can from each brand

The recipe with the smallest share of calories from carbohydrate on each side, leaving out toppers meant for supplemental feeding.

Put these two side by side

Purina ONE3 oz

Chicken & Salmon Recipe

Pâté · 105 kcal per can

Carbs: 3.9%
Protein: 39%
Phosphorus: not listed

Protein 39%Fat 57%Carbs 4%

Low carb

Weruva3 oz

Mideast Feast

Flaked · 63 kcal per can

Carbs: 0%
Protein: 77%
Phosphorus: 268mg

Protein 77%Fat 23%Carbs 0%

Low carbHigh proteinNo chicken

Same texture, head to head

For each texture both brands make, the lowest-carb recipe from each.

Texture	Purina ONE	Weruva
Pâté	Chicken & Salmon Recipe3.9% carbs · 39% protein · 105 kcal	Press Your Lunch! (Chicken Dinner in a Hydrating Puree)3.7% carbs · 60% protein · 56 kcal
Flaked	Chicken Recipe in Gravy13.6% carbs · 60% protein · 73 kcal	Mideast Feast0% carbs · 77% protein · 63 kcal

Which to choose, by what your cat needs

For a diabetic or overweight cat

Neither brand has a clear edge on carbs. Pick by recipe: Purina ONE’s lowest is Chicken & Salmon Recipe (3.9%), Weruva’s is Mideast Feast (0%).

For kidney concerns

Purina ONE doesn’t publish phosphorus on the pages we checked. Weruva publishes phosphorus for 6 of 10 recipes (typical 284 mg per 100 kcal). Only recipes with a published value can be checked, so start from those and confirm targets with your vet.

For kittens

Purina ONE has 7 of 8 recipes whose label we could confirm covers growth or all life stages; Weruva has 0 of 10. A missing statement doesn’t mean a can is unsuitable, only that we couldn’t verify it.

For allergies and picky eaters

Chicken-free: Purina ONE 0 of 8, Weruva 5 of 10. Fish-free: Purina ONE 0 of 8, Weruva 4 of 10. Textures: Purina ONE makes pâté, flaked; Weruva makes flaked, chunks in gravy, shreds in broth, pâté.

Questions about Purina ONE vs Weruva

Is Purina ONE or Weruva lower in carbs?

Both brands land close on carbs: 5.6% of calories for the typical Purina ONE can and 5.8% for Weruva. Purina ONE has 5 of 8 recipes under the 10% low-carb line; Weruva has 7 of 10.

Which has more protein, Purina ONE or Weruva?

Purina ONE. Its typical can gets 45% of calories from protein, against 66% for Weruva. Purina ONE has 3 of 8 recipes over 50% protein calories; Weruva has 10 of 10.

Which is more filling per ounce?

Weruva. Its cans average 20 calories per ounce against 31 for Purina ONE, so a cat needs fewer ounces of it to get the same calories.

Do Purina ONE and Weruva publish phosphorus?

Purina ONE doesn’t publish phosphorus on the pages we checked. Weruva publishes phosphorus for 6 of 10 recipes (typical 284 mg per 100 kcal).

Which is better for a diabetic cat, Purina ONE or Weruva?

Carbs are what matter most, and the two brands are close. The best single choice is a specific recipe, not a brand: Chicken & Salmon Recipe (3.9%) from Purina ONE or Mideast Feast (0%) from Weruva. Change a diabetic cat’s food only with your vet.