Choosing the Best High Calorie Cat Food

Is your cat looking a little more thin or scrawny these days? Or do they have less of an appetite than they used to? 

Owners and veterinarians are most often focused on a cat’s weight when it’s due to issues with obesity. However, the problem can also occur on the opposite end of the spectrum. Your cat may be naturally underweight or may have lost weight unexpectedly.

It could be from a number of reasons including dental issues, illness or age. Whatever the reason, you probably want to know how you can help your cat reach a healthy wait. And in this case how you can aid your feline friend in putting weight back on safely. 

The right food will definitely help address your cat’s weight loss, in addition to anything else under the supervision of your vet. The best combination for high calorie cat food is enjoyment and calorie density. Here are our top factors to consider that will help you find the best high calorie cat food. Your cat’s health and happiness is our priority!

Top High Calorie Cat Food

PetAg High Calorie Gel
15 Reviews
PetAg High Calorie Gel
  • Provides Additional Calories To Support Normal Weight, Maintain Skin And Coat Health, And Help During Recovery
  • Perfect For Growing Kittens, Pregnant Or Nursing Moms, Cats Recovering From Surgeries And Illnesses, And To Boost Calories For Picky Eaters
  • Tasty Chicken Flavor Cats Love; Easy-To-Feed Gel Is Preferred By Cats Over Tablets
  • Package Dimensions: 1.5" L X 2.375" W X 6.625" H
EnerCal High Calorie Nutrition Suppliment For Cats and Dogs 5oz Tube (3 Pack)
131 Reviews
EnerCal High Calorie Nutrition Suppliment For Cats and Dogs 5oz Tube (3 Pack)
  • Highly Palatable
  • Vitamin and Mineral Supplement for Dogs and Cats
  • Added Source of Energy
  • Prevents and treats hypoglycemia in puppies
  • Convenient 3-Pack
Vetoquinol Nutri-Cal High Calorie Nutritional Oral Gel Supplement for Dogs and Cats, 4.25oz
741 Reviews
Vetoquinol Nutri-Cal High Calorie Nutritional Oral Gel Supplement for Dogs and Cats, 4.25oz
  • Nutritional gel for pets who need extra calories and vitamins; also for growing puppies and kittens
  • Appetite stimulant, calorie booster, weight gainer for finicky or aging pets or pets refusing food
  • Nutri-Cal for dogs and cats also acts as an extra energy source; benefits hunting and working dogs
  • High-calorie pet supplement; contains omega-3 and omega-6 essential fatty acids and multivitamins
  • Palatable, simple to administer, easily-digested gel; accessible calories support a healthy appetite
Tomlyn High Calorie Nutritional Gel for Cats, (Nutri-Cal) 4.25 oz
1,508 Reviews
Tomlyn High Calorie Nutritional Gel for Cats, (Nutri-Cal) 4.25 oz
  • Nutritional oral gel for cats who need extra calories and vitamins; ideal for sick or aging cats
  • Appetite stimulant, calorie booster, weight gainer for cats refusing food; veterinarian recommended
  • Nutri-Cal for cats high-calorie gel for extra energy; concentrated source of vitamins and minerals
  • Contains Omega-3 and Omega-6 essential fatty acids to support a healthy heart, skin and joints
  • Palatable, simple to administer, easily-digested gel; accessible calories support a healthy appetite
Tomlyn Nutritional Supplement Gel for Dogs and Cats (Nutri-Stat) 4.25 oz
307 Reviews
Tomlyn Nutritional Supplement Gel for Dogs and Cats (Nutri-Stat) 4.25 oz
  • High calorie food supplement that supports a healthy appetite
  • Brand name quality for less. For dogs, cats, kittens, and puppies
  • Vitamin enhanced with an irresistible taste
  • 100% Satisfaction Guaranteed!
Thomas Laboratory Mega Cal High Calorie Formula, 16 oz, for Dogs and Cats
1 Reviews
Thomas Laboratory Mega Cal High Calorie Formula, 16 oz, for Dogs and Cats
  • Provides Calories and Essential Nutrients to Dogs and Cats
  • Gives Nutritional Support to Pregnant and Lactating Animals
  • Provides Energy to Working and Sporting Animals
  • Contains Vitamins, Minerals, and Amino Acids
  • Administer orally or add to food. For dogs and cats, give 1 tablespoon per 10 Lb of body weight, daily or as needed. Shake well before each use.

Top Features

Meat is the First Ingredient

The healthiest way for your cat to access additional calories will be from protein. Sometimes, food labels will have ‘high calorie’ written on them. But it’s in your cat’s best interest to confirm that it’s high protein cat food. In this case, your cat needs high quality, pure protein as the first ingredient listed.

Look out for chicken, turkey, lamb, rabbit, and salmon as top protein contenders.

No Carbohydrates

Carbs are a no-go. Unlike humans, cats are obligate carnivores. You may gain weight from pasta, but it doesn’t work like that for your feline friend. They don’t process a carbohydrate heavy diet well and can survive entirely on meat. Even if it contains a lot of calories, your cat won’t be able to gain weight this way.

Easy to Eat

Kittens need robust food to grow strong. Therefore, one of the best ways to fatten up a cat is to give them kitten or soft food. This is higher in calories, has everything a growing (or recovering) cat needs, and it is generally tastier than their regular food.

Another way you can choose optimal high calorie cat food is by picking soft, canned pate foods. The soft texture will make it easier for them to eat and provide them with more moisture. Also, it’s more likely that your cat will enjoy the juiciness of wet food over the dryness of kibble.

In general, dry food is not an ideal option as it’s more likely to contain low quality sources of protein.

Offer Something Different

While providing your underweight cat with the essential nourishment and calories they need, don’t hesitate to give your cat something special if you’re trying to help them gain weight.

if you give your cat “human food” like cooked chicken, tuna, or anchovies, your cat might be more inclined to eat. To start, your cat may view this as a treat for most cats, and it is likely better than their cat food. By mixing in special treats and flavours, they may be more inclined to eat more or eat the food that you already provide them.

Fatten Up Your Cat With High Calorie Food

Above all, your cat needs to eat. And if he or she is underweight as a result of age, stress, or illness, they still need strength to recover – and ultimately this will derive from food as a source of fuel. Below are some products that will help your cat put the weight back on. And at the end of the day, it’s just vital that they are eating.


If your cat is noticeably losing weight, the first thing you should do is take your cat to the vet to rule out any underlying medical conditions. After that, the healthiest way you can help your cat gain weight is by feeding them a high protein, moderate fat, low carbohydrate, diet. Sometimes, products may also be labeled and marketed for weight gain. 

There’s an important distinction between lean muscle mass and fat. You shouldn’t just feed your cat an abundance of high carb food – this will add too much fat to the body in an unhealthy manner. It’s critical to refrain from overfeeding your cat in a rush to make them gain weight, so just keep in mind that it’s more about the choice of food product over the amount of food.

When it comes to what has more calories – technically it’s dry food because the high water content in wet food does not put on calories. Wet food alone may be the best choice for a cat trying to lose weight, but for a cat trying to gain calories, a combination of dry, wet, and even raw food high in protein will be best. 

It’s definitely possible to put your cat on an all-dry food diet while you’re helping them reach their target weight. Healthy, nutritionally complete dry food has everything your cat needs. That is, if your cat enjoys dry food of course. But just ensure that a constant, fresh supply of water is available for your furry friend. You can either add water to their dry food, put multiple drinking stations around the house or use a special cat water fountain to encourage drinking.

Cats are notoriously picky. And if there is an underlying health condition behind weight loss, then they might have lost their appetite. And unfortunately – we can’t just force our cats to eat. If you’re struggling with feeding your cat there are a few approaches you can take to lure them in: 

  • Mix wet and dry food together 
  • Warm the food in the microwave a bit to serve at room temperature and fuel a stronger smell (don’t make it too hot though!)
  • Occasionally offer tasty treats (protein-rich treats are ideal!)
  • Add specialty made cat food toppers or supplements such as fish oil
  • Adding human food in moderation (low-sodium chicken broth, water from a can of tuna, nutritional yeast powder)
  • Switch to kitten food because it contains more protein than adult cat food  

Of course, any changes to diet or incorporating the above suggestions should be made in conjunction with your vet.

If you notice your cat’s weight deteriorating or they’re just not eating their favourite food, consider taking them to see your vet for an evaluation. Cats are picky but there’s probably a medical reason behind it. 

There are several reasons behind your cat being underweight and needing a high calorie diet. Some of them include, but are not limited to: 

  • Diabetes 
  • Chronic kidney disease 
  • Worms or intestinal parasites 
  • Inflamed pancreas 
  • Stress
  • Inadequate nutrition 
  • Dental/tooth pain 

At the end of the day, different issues require different treatments and nutrient profiles. For example, a diabetic cat needs a low carb diet, but one with chronic kidney disease specifically needs low levels of phosphorus.

This will vary depending on your cat’s breed, but the average housecat weighs around 10 pounds. Anywhere between 9 and 12 pounds is also acceptable. But you should confirm with your vet.

The following are most important features to consider when shopping for food aimed at helping your cat gain weight in the healthiest way possible.

  • High protein: 52 – 63% protein – the higher the better 
  • Healthy fats: weight gain supplements that include good fats such as fish oil and olive oil. A good fat level range is between 15 – 25% 
  • Nutritional value: Added vitamins and minerals
  • Ingredient quality: AAFCO rating 
  • Palatability: it has to taste good!

It’s all about feeding your feline friend the right diet with balanced nutrients in the right time frame. This doesn’t mean just added more portions of the food you’ve been feeding them beforehand. It’s better if the portions themselves have a sufficient amount of energy density in the form of protein. Try splitting their daily food into smaller meals throughout the day. You don’t want to overwhelm their digestive system, so consider a diet with prebiotics to help strengthen digestive health.