No one wants to imagine an underweight pet, so you can help your cat get back to full health with the best cat food for weight gain. Weight loss in cats can happen for all sorts of reasons and the approach to restoring their healthy body condition varies depending on the severity of the situation. It's a bit of a distressing subject, but the good news is that there are many types of high calorie cat foods. From soft pâté to liquid supplements – get an unwell cat back on the road to recovery.
If you have a cat that's clearly underweight, first of all, visit your vet and get a diagnosis. This will either confirm or rule out disease, kidney or thyroid issues. Other reasons for weight loss include dental problems and surgery. These medical-based reasons for weight loss require a more intensive type of nourishment, namely a liquid feed that's delivered through a syringe.
Best cat food for weight gain at a glance:
Petplan's expert, Brian Faulkner (Veterinary Surgeon, RCVS Registered) says emotional and environmental issues are common reasons why a cat can lose weight, too: "Cats are very sensitive to their surroundings. From household disruption to a new home/pet/family member it can cause stress and result in a loss of appetite." Food avoidance is a common reason why cats lose weight. In order to entice fussy eaters to regain their appetite it requires gentle feeding techniques. A nutrient-dense kitten food can be a first step towards restoring a cat's health who may not have been eating well due to stress.
Due to the variety of genetics, age or health conditions for kitties, high-calorie cat food has to be suitable for cats of all ages and breeds. From the runt of the litter to an older cat that's losing weight, here are our top recommendations for helping a cat to reach and maintain a healthy weight.
Always consult a vet before making a major change to a cat's diet.
Best cat food for weight gain
Best food for cats recovering from illness
Pro Plan Veterinary Diets CN Convalescence is a nutritionally dense wet food with high fat, protein, vitamins and minerals, plus antioxidants to support recovery. It contains a higher proportion of protein and fat in a highly digestible form, aiding recovery, repairing and restoring healthy body condition. In addition, it contains vitamin E, zinc and arginin to support skin and immune system recovery.
This wet food has a mousse texture that is easy-to-eat. Be aware of the feeding guidelines. Just one can a day is enough, plus 1/4 more if your cat is over 6kg. It's also a temporary food and you should switch back to regular cat food once your pet has regained its normal body condition.
This food has helped build up cats (and dogs) recovering from surgery. Customers say it's a good option if your pet is convalescing and can't eat too much.
Pros
- Nutritionally dense and palatable food to help pets recover from illness and surgery
- Mousse texture that is easy to eat
Cons
- Seek your vet's guidance before feeding a poorly pet dietetic food
Ingredients: | Pork kidney, liver, lung and plasma, turkey, salmon, sunflower oil, minerals, corn starch, fish oil, various sugars |
Best kibble for weight gain
Exigent means urgent, and this Royal Canin Protein Exigent Adult Dry Cat Food has a high protein content (more than 40 per cent) that's designed to entice cats to eat. In addition, this kibble contains a balance of carbs and fats to help a cat regain their ideal body condition. Plus, this complete food contains vitamins and minerals to support an adult cat's urinary system.
Reviews say this kibble successfully got picky eaters to chow down. But, for a minority of cats, it wasn't appealing. Given the price point, it's worth trying a small bag first to see if it suits your cat.
Royal Canin recommends that this kibble be combined with Royal Canin Instinctive Adult Cat Food, which is a wet food comprising of thin meaty slices in gravy.
Pros
- High concentration of protein and veterinary-developed balance of supplements
- High-quality ingredients designed to restore a cat's ideal body weight
Cons
- In rare cases, it just didn't appeal to the cats
Ingredients: | Dehydrated poultry protein, maize, vegetable protein isolate, wheat, animal fats, maize gluten, hydrolysed animal proteins, beet pulp, vegetable fibres, minerals, yeasts and parts thereof, soya oil, borage oil |
Best food to be given through a syringe
Help a cat gain and maintain a healthy weight post-trauma or surgery with Royal Canin Veterinary Diet Recovery. It's energy-dense, so a cat doesn't need to eat much of it to get their calories. Therefore, it puts less stress on their digestive system. It can be mixed with water to make it a liquid paste that can be given through a syringe. The ingredients list may raise eyebrows, but it's intended to deliver intensive nutrition to a dangerously underweight cat.
This is an Amazon's Choice recommended product. Customers say this high-calorie cat food is very palatable, and it stimulates their cat's appetite after illness. Reviews say that they mixed the pâté with a little warm water and their cats either lapped it up or received it through a syringe.
Pros
- Highly palatable and easy to digest
- Restored the appetite of very ill cats
Cons
- It's calorie dense, so a little goes a long way
Ingredients: | Meat and animal by-products, oils and fats, cereals, vegetable by-products, milk and dairy products, minerals, sugar, yeast. Highly digestible raw materials: Meat and animal by-products (poultry, pork), caseinate, corn starch mixture |
Best food that can be given as a liquid
Hill's Prescription Diet a/d Restorative Care is a nutrient-dense food that gives a convalescing cat essential vitamins and calories for healthy weight gain. It contains easy-to-digest and high energy ingredients, including turkey liver, chicken, maize and fish oil, to help nourish and stimulate the appetite of a poorly cat. In addition, it has essential vitamins, minerals and omega fatty acids.
Customer reviews confirm that this high-calorie food effectively entices extremely unwell animals to eat. It's helped restore seriously ill cats to health. A review comments that this was the only food a cat at their end-of-life could eat, and it gave them extra time with their owners. Vets recommend this food, which can be mixed into a liquid and given as a soup through a syringe.
Note that dietetic food should only be given on the advice of your vet.
Pros
- Easy to digest ingredients
- Nutrient-rich, high calorie food for convalescing cats
- Can be mixed into a liquid and given as a soup or through a syringe
- Can help stimulate a poorly cat's appetite
Cons
- Consult your vet about your cat's condition before giving them a high-calorie food
Ingredients: | Turkey, pork liver, chicken (9%), maize, pork protein isolate, fish oil, minerals, protein hydrolysate, various sugars, vitamins, taurine, dried egg yolk, trace elements |
Best liquid diet feed for cats
Recoactiv Recovery Immune is a tasty tonic for your cat that nourishes them with vital animal protein, fats, vitamins and minerals. It can help stimulate their appetite or be given to a cat with mouth and throat problems. This liquid food helps cats recover from malnutrition, post-surgery, or if a cat refuses to eat solid food. It has a palatable taste and is high-calorie to put goodness and strength back into an ailing cat. This liquid feed can be given on its own or with food.
Customer reviews are positive, and they say this liquid feed has brought their pets back from the brink. However, it is expensive, and one review said it cost a lot of money to nurse a litter of kittens on it.
Pros
- For malnourished or very unwell cats who require a liquid diet
- Helps stimulate a cat's appetite
- Ingredients are high calorie and nourishing to promote weight gain
Cons
- Always consult with your vet before giving a dietetic feed
Ingredients: | Water, animal proteins, oils and fats (rape oil and poultry fat), vegetable by-products, minerals and vitamins |
Best kitten food for weight gain
Give a poorly cat care and the right nourishment regain their strength and vitality with Royal Canin Kitten Dry Cat Food. This kitten food has been effective in getting fussy adult cats to eat. The nutrient-dense kibble is available in various sizes, from 400g up to 10kg. Royal Canin's article on how to help a cat gain weight advises that cats have a more sensitive digestive system that doesn't cope well with a varied diet. Therefore, you must gradually transition a cat to new food. In addition to choosing a complete food with the right balance of essential nutrients, the ingredients should be highly digestible to prevent a stomach upset. This kibble has been specially formulated to support and nourish kittens, so the ingredients are tailored to be energy-dense yet gentle on a cat's digestive system.
Kittens and kittens-at-heart love this food and customers say it been much better for their cat than other brands. A review comments that the kibble improved the odour and quality of their cat's stools. So, if you're looking for a good value for money food to help a cat reach a healthy weight, this is one to try.
Pros
- Has been effective in encouraging a fussy cat to eat
- Ingredients are mild for cats with sensitive digestion, yet nutrient-dense
Cons
- Treat it as a temporary measure to get an underweight adult cat back on track
Ingredients: | Dehydrated poultry meat, rice, vegetable protein isolate, animal fats, maize, maize gluten, hydrolysed animal proteins, vegetable fibres, L-lysine, beet pulp, minerals, fish oil, yeasts, soya oil, egg powder, sodium phosphate, fructo-oligo-saccharides, yeast extract, taurine, DL-methionine, marigold extract, L-carnitine |
Best nutritional paste for weight gain
Vetiq Nutri-Vit Plus is a high-calorie nutritional supplement. It can help stimulate a poorly cat's appetite and aid weight gain. This paste is aimed at cats and kittens (12+ weeks) who need extra energy and nutrition, usually due to recovery from illness. Though it might also be used on fussy eaters who are off their food, older cats and growing kittens may also benefit from this supplement for an energy boost.
The portion size is very small, just a 1/4 teaspoon for cats under 2.5kg and 1/2 teaspoon for cats over 2.5kg. You can spread it on their paws for them to lick or add it to food. The paste is fortified with vitamins and minerals to boost their immune system while being an easily digestible energy source.
Customer reviews say that this paste has effectively stimulated the appetite of their unwell pet. It has helped a rescue cat have vitality and fortified a kitten that was the runt of the litter. Also, it helped an old cat start eating normally again.
Be aware that it's a rather smelly and sticky paste, but this encourages cats to lick it off their paws. Then, reviews say, it's pretty miraculous how it restores their appetite.
Pros
- Stimulates a cat's appetite with sometimes miraculous results for very poorly pets
- Effective for cats of all ages
- Restores vitality and a glossy coat
Cons
- The paste is rather smelly and sticky
Ingredients: | Malt syrup, Petrolatum, Glycerin, Natural flavouring, Acacia Gum, Cod liver oil, AlphaTocopherol (Vitamin E), Magnesium sulphate-7-Hydrate,Manganesse Sulphate-1-Hydrate, Sorbic acid is (a preservative), Methyl Paraben (a preservative),Ferrous Sulphate-1-Hydrate, Calcium D Pantothenate (Vitamin B5), Nicotinamide (Vitamin B3), thaimine Hydrochloride (Vitamin B1), Propyl Paraben (a preservative), Pyridoxine Hydrochloride (Vitamin B6), Potassium Iodide, Retinyl Propionate (Vitamin A), Riboflavin Sodium Phosphate (Vitamin B2), folic acid, Cholecalciferol (Vitamin D3), biotin, Zinc Chloride, Cyanocobalamin (Vitamin B12) |
Best food for enticing fussy eaters
If your cat has been showing a lack of interest in their food, it may be worth trying a palatable wet cat food that has an appealing texture. Thrive Cat Food Complete Food is an ideal and convenient option. It is simply shredded chicken in a tasty broth, plus added vitamins and minerals that cats need in order to stay healthy. Try warming it up to get aromas going, as this will be particularly enticing to cats. Chicken is a source of taurine which is essential for maintaining cats' body functions.
Cats are obligate carnivores, meaning they need meat in order to survive. Plus, their digestive system doesn't cope with an overly varied diet. So, a simple chicken meal is a top way to tempt a poorly cat back to regular eating. In addition, the broth will give a cat extra hydration. Thrive recommend pairing this wet food with their range of kibble to get the full benefit of a balanced diet. Remember, dry cat food is extremely beneficial for keeping teeth in good condition.
Customer reviews say this food has helped quite unwell cats eat and enjoy their food. It also smells good, which is a novelty for cat food! Be aware that they are small tins and will ultimately need supplementing with other food to be cost-effective and give your cat a complete diet.
Pros
- Simple, high protein and a source of taurine
- Wide range of simple, yet enticing flavours available
- A success with poorly and fussy eaters
Cons
- Small tins that will need supplementing with a dry food to be cost effective and a complete diet
Ingredients: | Chicken in Chicken Broth, Vitamins & Minerals |
Best wet food for an appealing texture
A tasty wet cat food with an appealing texture is one way to entice a fussy, traumatised or unwell cat to eat. More so, if you gently warm the food so it releases an aroma it will be even more irresistible as cats are guided by their nose. Wellness Core contains tuna and salmon, so it is rich in omega fatty acids. Plus, there are a variety of Tender Cuts flavours to choose from. It's a complete wet cat food that's grain-free and all-natural.
This is an Amazon's Choice recommended product. Customers say that this food has been a winner with their picky cats. Some reviews highlight just how sensitive cats can be to the texture of their food; the gravy in this wet cat food is much preferred by their pets, in comparison to jelly and pâté.
It's worth trying a small pack to see if it appeals to your cat before making a larger purchase, as some pets turned their noses up at it – just no pleasing some!
Pros
- Tasty, rich and appealing texture and aroma
- Naturally hypoallergenic and all-natural, it does not contain grain
Cons
- Try a one-off purchase first, just in case your cat doesn't like it
Ingredients: | Tender Cuts With Tuna in Savoury Gravy: Chicken Broth, Chicken 23%, Tuna 6%, Potato Starch, Eggs, Carrots 3%, Chicken Liver, Minerals, Cranberries, Blueberries, White Sweet Potatoes |
Tender Cuts With Salmon and Tuna in Savoury Gravy: Chicken Broth, Chicken 19%, Salmon 6%, Tuna 6%, Potato Starch, Eggs, Carrots 3%, Chicken Liver, Minerals, Cranberries, Blueberries, White Sweet Potatoes |
Best for simple and digestible ingredients
Cats are smell-orientated when it comes to eating. Using a strong-smelling food, such as fish, can appeal to them. Applaws Multipack Chicken and Fish Selection in Broth is a simple wet cat food, that could be warmed the food up slightly to increase the aroma at entice a cat to eat. The tuna flavour contains 75 per cent tuna fillet. The portion size is perfect for giving small and frequent meals to aid gradual weight gain.
This is a popular brand, with over 9,000 reviews rating Applaws 4.5 out of 5. It's also an Amazon's Choice recommended product. Customers say that while this food is slightly more expensive than competitors – the quality is clear – and their cats love it. However, it is not a complete food. Therefore, it's important to supplement your cat's diet with sources of essential vitamins, minerals, fats and antioxidants.
Pros
- High in protein to fuel a cat's growth and energy
- A natural source of omega 3 and 6 to support the brain, heat and skin and coat
- The aroma can entice cats to eat
Cons
- Ideally, supplement this with a complete kibble that will provide essential vitamins and minerals
Ingredients: | Tuna Fillet: (Tuna fillet 75%, Rice 6%, Fish broth 19%) |
Chicken Breast: (Chicken Breast 75%, Chicken Broth 24%, Rice 1%) | |
Ocean Fish: (Mackerel 45%, Tuna fillet 30%, Rice 1%, Fish broth 24%) | |
Chicken with Cheese: (Chicken Breast 70%, Cheese 5%, Rice 1%, Cooking water 24%) |
Best high protein dry cat food
One of the reasons a cat may have lost weight is due to an intolerance to the food they've been eating. Choosing a quality hypoallergenic food, such as Scrumbles With 75% Chicken and Fresh Salmon, will help to restore their gut biome and vitality. It contains probiotics to promote good digestive health and with one billion healthy bacteria in a bag, this will improve their ability to absorb nutrients.
Typically, dry cat food can be higher in carbohydrates, but Scrumbles has a very high proportion of protein – with chicken, freshly prepared salmon and extra salmon oil for Omega 3 – which will help restore a cat's wellness.
Customers say this kibble smells much better than previous brands they've tried. It has helped their cats overcome allergies and restored glossy, healthy-looking fur. However, some fussy felines simply didn't want to try it, therefore it's best to buy a small bag or sample to ensure it's to your cat's liking.
Pros
- High proportion of quality protein
- Probiotics to help restore a poorly cat's gut biome
- Complete food with vitamins and minerals to fortify a cat's immune system
- Hypoallergenic and all-natural ingredients
Cons
- A minority of cats didn't like it
Ingredients: | 69% Chicken (33% Dehydrated Chicken, 26% Freshly Prepared Chicken, 7% Chicken Fat, 3% Chicken Liver) 21% Rice, 4% Freshly Prepared Salmon, 2% Salmon Oil, 2% Dried Alfalfa, Minerals, Vitamins, 0.4% Dried Cranberry, 0.07% Dried Carrot, Extract of Yucca Schidigera 150mg |
How we chose the best cat food for weight gain
All of these cat foods have been hand-selected by our team of Take A Break Pets shopping experts. We carefully considered quality, nutrition and vets-recommendation in our selection of the best. Our team has spent hours investigating and researching the best cat food for weight gain to make it easier for you to find the very best, and we'd never recommend a product we don't believe in.
With pets big and small on our team, where possible we'll share the best products that have been tried and tested by our own furry friends who have given their paw of approval. And, with help from veterinary experts, we share their knowledge to ensure everything we choose is paw-fect for your pet.
Best cat food for weight gain FAQs
How do you prevent a cat from becoming a fussy eater?
Have you ever bought a food that your cat seems to like at first, but then they go off it, or they downright turn their nose up at a food without taking a bite? Or, you've got a cat that subsists on junk food grade snacks and treats? Whether you're dealing with a princess or a picky eater – with patience and the right food – there are some things you can do to encourage better eating habits.
• Cats are more discerning than dogs. Feed them a good quality food, the best you can afford. The flavour and texture of meat can encourage fussy cats to eat.
• Don't change their diet all the time. If you're changing their diet, do a slow transition. A sudden change might make them fussy and unaccepting of a new food.
• Food doesn't have to be available all the time; instead, give regular small meals so that your cat has a chance to become hungry. For more information on how much food to feed a cat, read Take A Break Pets vet-checked feeding guide.
• Keep the food fresh; that applies to both wet and dry food. Consider using an automatic pet feeder.
• Don't just feed dry food; make sure you're giving them some wet food. Wet food hydrates them and it's more palatable.
• Consider your cat's food bowl. Cats are very sensitive to flavour, so plastic and metal might taint the food. Go for a shallow ceramic bowl. The depth of the bowl is important. Deep bowls brush against their whiskers, which they don't like at all.
• A cat may not want to eat around other cats. You'll find that a cat is either social or solitary. Petplan's expert Brian Faulkner says: "If you have more than one cat, it might be best to feed your cats separately to avoid food guarding behaviours."
• Are they secretly visiting next door and eating there? 😺
Steps to encourage your cat to eat:
Brian gives some tips on how you can encourage cats to start eating.
• Offer wet food over dry food for a cat with mild dental disease.
• Offer a more digestible formula for older cats.
• Tempt your cat with strong-smelling liver or tuna-based cat foods or by gently warming their meal to release its aromas.
• Avoid too many fatty or greasy foods.
• Feed smaller portions of freshly opened food rather than leaving big meals to dry out or go stale.
For further information from Petplan's vet expert, read this article: "Why is my cat not eating?"
Medical reasons why a cat might have lost weight?
Emily Norton, Veterinary Department Manager at Woodgreen Pets Charity, outlines medical conditions that can cause a cat to lose weight.
"Various medical conditions can cause a cat to lose weight. For example, one of the first signs of illness in cats with kidney disease and hyperthyroidism is dramatic weight loss. Conditions affecting the digestive tract can cause weight loss due to the disruption of its normal function. Cats with oral health issues, including gingivitis, fractures and feline odontoclastic reabsorption lesion (where the hard tissue beneath the tooth enamel erodes and eventually becomes destroyed) will likely go off their food if in pain, so will lose weight as a result.
"If your cat has suddenly become active because of more outdoor access or following recovery from surgery, you may also notice a drop in weight – this is normal and nothing to be concerned about."
What approaches should one take to restoring their weight?
"If your aim is to regain your cat’s body condition, be mindful this may take time depending on the cause of the weight loss. Some health conditions and pain can be managed and treated with medication, which should resolve or limit the impact on your cat’s weight. You should start to see your cat gain weight as soon as they’re stable on their medication. With conditions that affect your cat’s digestive tract, you may need to wait longer for any weight gain. Increasing their food by small amounts each week is a gentle way to begin regaining their body condition. It’s important not to suddenly increase their food though, as this may cause further issues such as refeeding syndrome – a potentially fatal condition that can affect underweight or malnourished pets once feeding restarts. I’d recommend using a Body Condition Score guide, such as Royal Canin Cat, as a reference to check how your cat is progressing with their weight gain."
Natalie Knowles is a Homes & Garden Product Writer for Take A Break Pets, specialising in all things cats and dogs. In her other life Natalie is a successful artist and illustrator.