Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How Do I Get My Cat to Gain Weight? Our Vet Answers With Infographic

Share

tabby cat eating from metal bowl

Monitoring your cat’s weight is a great way to get a hint about how well they are eating and if their overall health is on track. Kittens should steadily gain weight until they reach adulthood, after which, their body weight should be maintained. If you notice your cat losing weight, you are right to be concerned. There are several reasons that your cat may suddenly lose weight, and some of these can be caused by serious illnesses. Read on to learn more about how to monitor your cat’s body weight and what to do if your cat is too thin.

divider 2 cats

How Do I Know If My Cat Is Underweight?

Even if your cat isn’t rapidly losing weight, you might be concerned if they appear to be too thin. The best way to tell if your cat is underweight is by evaluating their body condition score (BCS). The BCS is used to describe a cat’s body shape and can be used for all breeds of adult cats. The score ranges from 1 to 9, with 1 describing a cat as “severely underweight” and 9 as “morbidly obese.” An ideal score on this scale is 5.

A cat with a BCS of 5 will have a visible waist when observed from above, and the ribs should not be visible but easily felt with a slight amount of pressure. You can take a look at the score chart from the World Small Animal Veterinary Association1  to get a better idea of where your cat sits on this scale.

If you notice that your cat’s ribs and spine are prominent on your cat’s body, they are underweight and likely have a BCS below 4. This should prompt an appointment with the veterinarian to get your kitty checked out for any serious illnesses.

Ideal Cat Cat Weight Illustration

Cat Body Condition Score Healthy Weight
You are free to use this image but we do require you to link back to Catster.com for credit

divider 2 cats

How to Get an Older Cat to Gain Weight?

Cats are known to gradually lose weight when they become seniors at around 12 years of age. Even though this is common, you should still book yearly appointments with your veterinarian to ensure that your cat’s health is on track. As cats enter their golden years, they may have a reduced ability to digest and acquire the nutrients in their food.

You may want to choose a food with a high caloric content and protein content to counteract any decreases in digestibility and loss of muscle mass. Another thing to consider in older cats is that they may have a decreased ability to smell and taste their food. One adjustment that can overcome this is the use of a high-moisture canned diet, which readily releases aromas and is more flavorful than dry kibble.

What If My Cat Is Losing Weight?

If your cat is visibly losing weight and is not specifically on a weight-loss plan, this can be a sign of a health problem. It is best to get an appointment with your veterinarian to discuss your cat’s weight loss and any other signs that may indicate the presence of illness. Common illnesses that cause cats to lose weight include hypothyroidism, kidney disease, and diabetes. Since both hyperthyroidism and diabetes cause hunger, many pet parents don’t notice their cat losing weight at first.

grey cat eating meat
Image Credit: Chendongshan, Shutterstock

divider 2 cats

What Can I Feed My Cat to Gain Weight?

Ultimately, your cat will have to eat more calories than they are using on a daily basis to gain weight. However, this doesn’t mean that they should just get more treats! Only up to 10% of your cat’s daily caloric intake should come from treats, even when they are trying to gain weight.

Choose a diet with a high caloric density that is still nutritionally balanced. There should be a statement on the label that says that the diet is complete and balanced for adult cats or all feline life stages. With a wide variety of textures and flavors available commercially, you should be able to find a diet that will match the specific preferences of almost any cat!

How Many Calories Exactly?

Your veterinarian can help you calculate exactly how many calories your cat should be consuming per day. They will take into account whether your cat has been spayed or neutered and their activity level. They will then work out how many grams (or ounces!) of your chosen food this equates to. When measuring out meals to meet this requirement, use a weighing scale, as cups are not accurate.

You will need to weigh your cat regularly and may need to reduce their calories once they start to gain weight—you don’t want to tip them over into obesity!

divider 2 cats

Are There Any Supplements That I Should Use to Get My Cat to Gain Weight?

There are no specific supplements that are recommended to give to cats to help them gain weight. Adding supplements to meals can cause a diet to become imbalanced and lead to nutrient deficiencies. Consult with a veterinarian before deciding to add something to your cat’s diet over the long term.

My Cat Really Doesn’t Like Any Commercial Foods! Can I Cook for Her?

Everyone loves a home-cooked meal! Unfortunately, it isn’t as simple as throwing together some nice-looking ingredients together in a bowl when it comes to your cat. If meals are not complete and balanced, nutrient deficiencies can develop over time. If you are keen to cook for your cat, source your recipes from a board-certified veterinary clinical nutritionist. They can work with you to create a tailored meal plan that matches your cat’s needs and preferences.

divider 2 cats

Why Is My Cat Not Eating?

Assuming your cat is otherwise well, there are some things that can put a cat off their food. Cats are prey animals and may not eat if they feel under threat.

Lazy and well-fed cat looking for food and not eat
Image Credit: Elena Kutepova, Shutterstock

Cat Mealtime Anxiety

Something to look out for as a reason that your cat may not be eating enough is anxiety surrounding mealtime. Ensure that there isn’t anything that may be stressful in the environment preventing your cat from eating comfortably. Any changes in the household, including the introduction of a new person or the rearrangement of furniture, can cause unease and inappetence.

Cat Food Bowl Access

Questions to keep in mind when considering your cat’s food bowl are:
  • Can your cat easily get to the food bowl at all times? — If the food bowl is at a height, make sure your cat can easily reach it. Older cats may start to struggle with arthritis, making it harder for them to reach their bowl. The same consideration should be taken for bowls that are in rooms that are very busy during the day, as shy cats may be hesitant to eat even when they are hungry.
  • Is there any competition in the household for the food bowl from other pets? — If your cat is fed freely with other cats in the home, make sure that there is at least one bowl per cat, plus one extra. This will prevent resource guarding and bullying for food among household companions. You may need to feed shy cats in other rooms to help them get enough to eat.

divider 2 cats

Conclusion

Most cats are overweight, not underweight, so before you embark on a mission to get your cat to gain weight, it’s best to check with a veterinarian that weight gain is needed. They can also make sure there’s nothing amiss that might explain why your cat is underweight.

Once your vet has given you the go-ahead, they’ll help you work out how many calories your pet needs to eat. You may also need to look at your cat’s home environment to make sure they’re getting all the food they need.

See Also: 


Featured Image Credit: Marina Demidiuk, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

Why Is My Cat Panting and Drooling? Vet-Verified Causes & Prevention

Cats are usually fastidious groomers that don’t allow a single hair to fall out of place. However, there are times when cats can...

Is My Cat Stressed or Sick? Vet-Reviewed Signs & Ways to Help

Cats can struggle with change just as any species, so in times of stress, it is important to be more cautious of their...

How to Play With Your Cat: 10 Vet-Approved Tips & Ideas

Playing with your cat is a great way to pass the time, get a few laughs, and build a close bond with your...

Do Cats Get Embarrassed in the Same Way Humans Do? Vet-Reviewed Feline Behaviour

Embarrassment is a very human emotion that we experience on a number of occasions, whether you walk out of a bathroom with toilet...

Keep reading

What Does It Mean When a Cat Purrs Loudly? Vet-Verified Facts & Reasons

Cats are fascinating creatures, and as cat lovers, we want to learn as much about them as possible. One of the most intriguing sounds that a cat makes is purring, and many wonder what it means, especially when it’s loud....

cat kneading and purring while lying on owner's lap

Why Do Cats Like the Smell of Bleach? Vet-Reviewed Feline Behavior Explanation

Cleaning with bleach may be a stellar way to kill off pesky pathogens, but the smell left behind can be a bit overwhelming. Most people don’t love the odor of bleach, but some cats can’t seem to get enough of...

Bleach Bottle Spray

How To Read a Cat’s Body Language: 5 Vet-Reviewed Moods & Signals

While cats can’t use words to tell us how they’re feeling, most are expert communicators who rely on different types of vocalization, body language, and chemical cues to tell humans and other cats how they feel. Cats use their tails,...

A cat looking at something far away

Why Do Cats Rub Against Your Legs? 3 Vet-Verified Reasons for This Behavior

Trying to understand any aspect of your cat’s behavior can be frustrating, and as all cat owners know, cats have a wide array of behaviors! Usually, a cat rubbing up against your legs is a good sign, and there is...

Cat,Rubbing,Against,Owners,Legs.

Why Is My Cat Panting After Giving Birth? Vet Approved Facts & FAQ

Breeding your cat is a beautiful experience both for you and your cat. And while being pregnant is exciting, giving birth can be challenging for your furry friend, especially if she gives birth to multiple kittens. After giving birth, many...

fluffy cat pregnant give birth and new born baby kittens_iarecottonstudio_shutterstock

Cat Pancreas: Feline Anatomy Explained (Vet-Reviewed)

The inner workings of the feline body are similar to our own in many ways, but as you can imagine, there are also some significant differences. One of the similarities the human and feline bodies share is that they both...

vet checking up tabby cat

Why Is My Cat Peeing on My Bed All of a Sudden? 5 Vet-Reviewed Reasons

Have you ever had to ask yourself “why did my cat pee on my bed”? Us too. As cat owners, we love our cats but we don’t love their pee. It’s pungent and difficult to remove from places outside of...

cat-peeing-on-the-bed

Meet VOICE: The Program Helping Rescue Pets Through Simple Daily Clicks

What if you could help feed animals in need without spending a dime? At a time when the cost of living keeps rising, one of the first things to be scrapped from the household budget is charitable donations. Of course,...

his-eye-is-on-the-sparrow

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.