Classic · Flaked · 3 oz can

Weruva Mack & Jack

Weruva Mack & Jack is a flaked wet cat food in a 3 oz can with 66 calories. About 7.5% of its calories come from carbohydrate, 69% from protein and 24% from fat. That makes it lower in carbs than 75 of the 143 other cans we compare, and under the 10% line often used for diabetic cats.

Low carb High protein No chicken

Illustration, not the maker’s packaging

Carbs: 7.5%
Protein: 69%
Calories: 66

Where the calories come from

Protein 69%Fat 24%Carbs 7%of calories

Carbohydrate supplies 7.5% of calories, under the 10% line many vets use for diabetic cats.
Phosphorus is 323 mg per 100 kcal, above our 200 mg guide for cats with kidney concerns.
Label states it is complete and balanced for adult maintenance.

How it compares to other wet cat food

Each bar spans every can we compare, from lowest to highest. The line marks the typical can; the dot is this one.

Carbs, % of calories7.5%

0%median 8.4%35%

Lower in carbs than 75 of 143 other cans.

Protein, % of calories69%

30%median 45%77%

Higher in protein than 132 of 143 other cans.

Calories per ounce22 kcal

17 kcalmedian 28 kcal41 kcal

Lighter than 123 of 143 other cans, ounce for ounce.

Phosphorus per 100 kcal323 mg

89 mgmedian 253 mg464 mg

Lower in phosphorus than 11 of 36 other cans that publish it.

Every Weruva can, ranked by carbs

This recipe is number 6 of 10 from Weruva, lowest carb first.

Weruva recipe	Carbs	Protein	kcal
1. Mideast FeastFlaked · 3 oz	0%	77%	63
2. Steak Frites DinnerChunks in gravy · 3 oz	1.5%	75%	62
3. Chicken Frick 'A ZeeShreds in broth · 3.2 oz	3%	60%	75
4. Press Your Lunch! (Chicken Dinner in a Hydrating Puree)Pâté · 3 oz	3.7%	60%	56
5. Meal or No Deal! (Chicken & Beef in a Hydrating Puree)Pâté · 3 oz	4.1%	66%	51
6. Mack & JackFlaked · 3 oz	7.5%	69%	66
7. Kawa BootyFlaked · 3 oz	7.6%	69%	56
8. Lamb Burger-iniShreds in broth · 3.2 oz	11.1%	55%	78
9. Amazon Livin'Shreds in broth · 3 oz	12.4%	65%	59
10. Paw Lickin' ChickenShreds in broth · 3 oz	12.4%	65%	57

More about Weruva wet cat food

How many cans of Mack & Jack a day?

For a spayed or neutered adult eating only this food. Weigh your cat every couple of weeks and adjust by about 10%.

Your cat’s weightlb

4 cans a day

About 261 calories a day

Kittens, weight loss or mixed feeding

Cat weight	Calories a day	Cans a day
6 lb (2.7 kg)	178	2¾
8 lb (3.6 kg)	221	3¼
10 lb (4.5 kg)	261	4
12 lb (5.4 kg)	299	4½
14 lb (6.4 kg)	336	5

Ingredients and allergens

First ingredients on the label

Water Sufficient For Processing
Tuna
Mackerel
Skipjack
Sunflower Seed Oil
Locust Bean Gum

Animal ingredients

tuna
mackerel

No chicken or poultry. Contains fish or fish oil.

From the label as published on weruva.com, checked October 26, 2026. Recipes change, so check the can you buy.

Weruva recall history

Does the can say something different? Report a correction

Questions about Weruva Mack & Jack

Is Weruva Mack & Jack low in carbs?

Yes. About 7.5% of its calories come from carbohydrate, under the 10% line often used for diabetic cats. It is lower in carbs than 75 of the 143 other cans we compare.

How many calories are in a can of Weruva Mack & Jack?

A 3 oz can has about 66 calories (774 kcal per kilogram). That is 22 calories per ounce, less than the typical can we compare.

How many cans of Weruva Mack & Jack should a cat eat a day?

A 10 lb spayed or neutered adult cat needs roughly 261 calories a day, which is about 4 cans of this recipe if it is the only food. Kittens, active cats and cats losing weight need different amounts.

Does Weruva Mack & Jack contain chicken or fish?

It contains no chicken or poultry. It contains fish or fish oil. Animal ingredients on the label: tuna, mackerel.

How much phosphorus is in Weruva Mack & Jack?

About 323 mg per 100 calories, lower than 11 of the 36 other cans with published phosphorus.

Is Weruva Mack & Jack suitable for kittens?

Its label covers adult maintenance, not growth, so it isn’t meant as a kitten’s main food.