Royal Canin Wet Food Calorie and Dry Matter Analysis

If you've ever tried to read the percentages on the back of Royal Canin wet food pouches—such as "protein 9%, fat 2.6%, moisture 81%"—and compare two products, you've likely noticed a problem: each product has a different water content. Comparing a product with 78% moisture to one with 82.5% using raw percentages is like comparing the contents of two containers of different sizes without scaling them to a common container. In this article, we brought the packaging analysis of 28 Royal Canin wet food products in our catalog down to the same baseline: we removed the water, estimated the energy, and placed each product side by side.

Why are the percentages on the label misleading?

About four-fifths of wet food is water. Because the protein and fat percentages on the packaging are calculated along with this water, the difference between "10% protein" and "12% protein" can make the actual nutritional difference look smaller or larger than it is. For an accurate comparison, the dry matter ratio is used: the protein percentage is divided by the value (100 − moisture).

A concrete example: The Pouch Light Weight Diet Wet Cat Food lists 10% protein, while the Pouch Persian Specific Wet Cat Food for Persian Cats lists 9%. Looking at the label, the first one seems slightly ahead. On a dry matter basis, however, the difference is much larger: 57.1% for the first, and 41.9% for the second. The reason is the water share: moisture is 82.5% in the first product and 78.5% in the second. Meanwhile, the fat content of the second product is 6.0%, which is nearly triple that of the first (2.1%); in other words, they differ not in protein, but in energy density.

Calculation method and margin of error

The energy (kcal) value is not stated on the packaging for every product. Where it was not provided, we made estimates using modified Atwater coefficients: 3.5 kcal per gram of protein and carbohydrate, and 8.5 kcal per gram of fat. The carbohydrate ratio is the portion remaining after subtracting protein, fat, ash, fiber, and moisture.

We tested how consistent this estimation is across two products, comparing it to the energy declared by the manufacturer on the packaging:

• Pouch Gravy Healthy Ageing 11+ Senior Wet Cat Food: declared 868 kcal/kg, our estimate 809 kcal/kg (approximately 7% lower).
• Mini Adult Small Breed Dog Canned Food: declared 918 kcal/kg, our estimate 874 kcal/kg (approximately 5% lower).

In other words, the estimates fall slightly below the actual value; it is accurate to read the kcal values in the table as "approximate and slightly low." However, the ranking between products is reliable because the same method was applied to all of them. For the exact energy value, the product's own packaging should always be the primary reference.

Cat wet foods: 18 products, dry matter table

The table is sorted from lowest to highest by energy density. All pouches are 85 g.

Dog wet foods: 10 products, dry matter table

On the dog side, package sizes vary by product family: pouches are 85 g, small breed canned food is 195 g, and medium and large breed canned foods are 410 g. The final column represents the energy of the entire package, not per gram.

Six findings from the tables

1. The protein share for cats is significantly higher than for dogs. Dry matter protein ranges from 42% to 59% in cat pouches, compared to 38% to 44% in dog products. Cats are obligate carnivores; this difference shows that the formulations are tailored to the needs of the two species. Therefore, dog wet food is not considered a suitable alternative for cats.

2. Gravy and Jelly are not two textures of the same recipe. In the sterilised cat series, the values for both are almost identical (69 and 69 kcal/100 g). However, in the kitten series, the dry matter protein of the jelly product is 59.4% while the gravy version is 55.0%. In the adult Instinctive series, the fat content of the jelly product is 4.5%, compared to 2.8% in the gravy version, with energies of 84 and 77 kcal/100 g respectively. Thus, when choosing a texture, you need to look not only at the cat's preference but also at the calorie level you are aiming for.

3. There is about a 56% difference between the lightest and most dense cat pouch. The Pouch Light Weight Diet Wet Cat Food is the lowest on the list at approximately 61 kcal/100 g, while the Pouch Persian Breed Specific Wet Cat Food is the highest at 95 kcal/100 g. This translates to 52 versus 81 kcal per pouch.

4. Breed-specific dog pouches stand out on the fat side. In the Yorkshire Terrier Breed Specific Wet Dog Food, fat is 6.0% and the dry matter fat ratio is 27.3%. Since small breeds have a high energy expenditure relative to body weight, this design makes sense; however, for a dog prone to weight gain, the number of pouches should be adjusted accordingly. The Pouch Mini Adult Dog Wet Food is the lightest option among dog pouches at approximately 85 kcal/100 g.

5. Senior cat products keep fat low. In the Instinctive +7 series, fat is 2.5%; in the Healthy Ageing 11+ series, it is 4%. Phosphorus is also separately indicated on the packaging (0.15%) for seniors. What is right for an older cat is determined not only by age, but also by kidney and dental conditions; this decision should be made with a veterinarian.

How much of daily energy does a single pouch provide?

For a rough reference, the resting energy formula is used: 70 × (kg)^0.75. For an adult, sterilised cat, roughly 1.2 times this amount is a commonly used starting point for daily requirements, while roughly 1.6 times is used for a sterilised adult dog. These are averages; individual differences are large.

• A 4 kg sterilised cat: approximately 238 kcal per day. A Pouch Gravy Sterilised Wet Cat Food pouch (58 kcal) provides about 25% of this.
• A 5 kg adult dog: approximately 374 kcal per day. A Pouch Mini Adult Dog Wet Food pouch (72 kcal) provides about 19% of this.

Therefore, a pouch should not be thought of as a "small extra," but as a significant item in the daily energy budget. In households feeding both dry and wet food, a common cause of weight gain is adding wet food without reducing the dry food.

How much should be deducted from dry food?

The method is simple: divide the energy of the pouch by the kcal/kg value on your dry food packaging. For example, if your dry food is 3,800 kcal/kg and you are giving your cat a Pouch Gravy Sterilised Wet Cat Food pouch (58 kcal), you need to subtract 58 kcal ÷ 3.8 kcal/g ≈ 15 g of dry food from the daily portion. Read your own dry food's kcal/kg value from the packaging and perform the same calculation.

Texture and packaging: which one and when?

• Gravy and jelly pouches: pieces are in sauce or jelly; an easy way to increase fluid intake for cats that drink little water. Since they are single-use 85 g portions, there are no storage hassles.
• Mousse: a pureed, smooth texture; used in products designed for mothers and kittens (such as Starter Mousse) during the transition from milk to solid food.
• Canned food (195 g and 410 g): practical for medium and large breed dogs; once opened, it should be stored in a sealed container in the refrigerator and generally consumed within a day or two. For the exact duration, follow the instructions on the packaging.

Which product suits whom?

• Sterilised cats prone to weight gain: Sterilised Gravy or Sterilised Jelly; for stricter calorie control, Light Weight.
• Kittens: Kitten Instinctive Gravy and Jelly; for mothers and babies, Mother Babycat.
• Fussy or picky cats: Sensory Smell, Feel, and Taste series differ by aroma, texture, and taste.
• Small breed dogs: Yorkshire Terrier, Chihuahua, Poodle, and Pomeranian pouches.
• Medium and large breed dogs: Medium Adult and Maxi Adult Gravy series.

You can also find all products via category pages: Cat Wet Food, Dog Wet Food, and the Royal Canin brand.

Frequently Asked Questions

Is Royal Canin wet food sufficient on its own?

It depends on the product. Some wet foods are labeled as "complete food" while others are "complementary food." This statement on the packaging determines whether the product can be given alone; consult a veterinarian if you are unsure.

How many pouches of wet food should a cat be given per day?

It varies depending on the cat's weight, activity level, and neutering status. Based on the calculation in this article, a single pouch for a 4 kg sterilised cat accounts for about a quarter of its daily energy. If given along with dry food, a deduction must be made from the dry food amount.

Is Gravy or Jelly better?

Neither is "better" than the other; because their recipes are not identical, values differ by series. Choose the one that fits your goal by looking at the kcal and fat columns in the table, keeping in mind your cat's preference for texture.

How long can opened canned food be stored?

It is generally recommended to consume it within a day or two when stored in a sealed container in the refrigerator. Since pouches are single-use, they should be served on the day they are opened.

Can dog wet food be given to cats?

It is not recommended. As seen in the tables, cat and dog formulas are designed differently regarding the protein and fat balance; cats have specific nutritional requirements.

Are the kcal values in this article exact?

No, they are estimates made from the analytical values on the packaging and tend to fall a few percentage points below the declared values. Check the product packaging for exact energy content.

Data source and limitations

All values are taken from the packaging analyses found in the product records of our catalog; if the manufacturer changes the recipe, the values may change. This article is for general informational purposes; for animals with illnesses, pregnant, nursing, or senior animals, a veterinary consultation is required for a nutrition plan.