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 Long Do Obese Cats Live? Vet Approved Facts & Health Tips

Share

white-cat-laying-on-the-animal-scales-while-the-male-vet-measure-weight_Odua-Images_Shutterstock

It’s easy for your cat to become obese. They’re too adorable when they beg for food with those big eyes. However, obesity can drastically affect your cat’s lifespan. While healthy cats have been known to live into their 20s, obese cats can have their life expectancy significantly reduced to 5–10 years.

Understanding obesity, its causes, and the risks involved will help you understand why it’s such a big problem. In this guide, we’ll help you determine whether your cat is at risk of obesity and how to prevent it and safely manage your cat’s weight.

divider 1 paws

How Long Do Healthy Cats Live?

Before fully understanding how obesity affects your cat’s life expectancy, you must know how long healthy cats can live. It can vary depending on the breed and health of the cat. Another factor to consider is whether the cat is allowed outdoors and has been spayed or neutered.

Intact cats are prone to reproductive diseases and cancers that can lessen their life expectancy, and outdoor cats are more at risk of encountering predators or getting hit by cars. On average, a healthy cat will live between 12 and 14 years. Some cats have been known to live much longer and can reach their 20s.

a cat lying on a blanket
Image Credit: Nadezhda Zaitceva, Shutterstock

How Long Do Obese Cats Live?

While other factors can interfere with a cat’s lifespan, obesity is one of the most common. It affects almost 60% of cats in the U.S.A. and plays a massive role in a cat’s life expectancy. Excess weight, even a moderate amount, has a significant impact on a cat’s health and longevity. Studies have shown a 2.8-fold increase in mortality in obese cats between the ages of 8 and 12 compared to lean cats.

An extensive lifetime study of Labradors found that a moderately overweight group of dogs lived approximately 2 years less than the leaner dogs. Similar results are expected in cats, and on average, obese cats may have their life expectancy reduced to 5–10 years.

divider 1 paws

What Causes Obesity in Cats?

It’s easy to assume that obesity is only caused by overfeeding your cat. While diet and the amount of food your cat eats are two of the biggest causes of obesity, there are other causes to consider.

1. Age

How old your cat is can affect how much weight they put on. Usually, middle-aged cats are the most at risk of gaining too much weight. The cats that are most at risk are between 8 and 12 years old. All cats are susceptible to obesity, but younger cats, particularly kittens, are usually active enough to burn off the calories that they eat.

hungry Nebelung cat with kibbles in front
Image Credit: Alesia Fes, Shutterstock

2. Diet

There are a few ways that your cat’s diet can affect their weight. Obesity is most often caused by overeating. It can be due to excessive treats, indulgent or ad-lib feeding practices, or something more accidental, like inaccurately measuring their food for meals. Sometimes, it can be a mix of all three.


3. Inactivity

Indoor cats have less to do than outdoor cats and are more likely to be overweight. If their diet isn’t adjusted to match their activity levels, your cat’s tendency to nap all day in their favorite window can quickly lead to obesity. Always give your cat something to do, such as playing with toys or encouraging them to work for their food using puzzle toys.

grey british shorthair cat sleeping below person's feet in the couch
Image Credit: Carlos G. Lopez, Shutterstock

4. Underlying Health Conditions

Inactivity isn’t just caused by your cat’s environment; it can also be a result of an underlying health condition. A problem like arthritis is a common cause of obesity. If your cat is in pain whenever they move, they’ll be less inclined to want to get up and move around.

It’s not just joint issues that you need to consider, however. Food sensitivities and allergies can make it difficult to find a suitable weight management diet for your cat.

divider 1 paws

What Are the Risks of Obesity in Cats?

An overweight cat is often seen as adorable or cute. Unfortunately, obesity is an incredibly serious problem and can affect your cat’s lifespan and lead to severe health issues, as well as negatively impacting their quality of life.

Obese cats are more at risk of developing the following:
  • Arthritis
  • Bladder stones
  • Cancer
  • Complications with anesthesia
  • Diabetes
  • Heart disease
  • Hypertension
a sick balinese cat
Image Credit: beka venezia, Shutterstock

How to Tell If Your Cat Is Obese

Obesity isn’t the same for all cats. Their breed, size, and age can all affect how much they weigh. Large breeds, for example, might weigh more than small cats, but that doesn’t mean they’re overweight. A cat’s ideal weight changes depending on the individual.

Sometimes, you can tell if your cat is obese by looking at them from above. They might be overweight if you can’t see a waistline, or they look rectangular. To properly figure out if your cat is obese, you first need to determine their ideal weight. Cats that are more than 20% over their ideal body weight are considered obese.

A veterinarian can help you determine your cat’s body condition score and whether your cat is the right weight, slightly overweight, or obese. They’ll also be able to help you manage your cat’s weight properly by recommending the right diet and exercise regime.

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

How to Prevent Obesity in Cats

Obesity in cats is preventable. It might not be easy, but with the right tactics, you can help your cat maintain a healthy weight. This will reduce your cat’s chances of becoming obese and keep them healthy.

Obese cats aren’t beyond hope, and you can help your cat lose weight. Ask the veterinarian for advice, and always follow the recommended diet plan to ensure your cat stays healthy while losing weight. Even a small amount of weight loss can significantly affect your cat’s quality of life.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

Ways to manage obesity include the following:

Never resort to cutting down on your cat’s food altogether. You still need to ensure that your cat gets a balanced, nutritional diet. Instead, reduce the number of treats and snacks between meals, and don’t give them human foods!

Regarding their main diet, you need to adjust the portion sizes based on the veterinarian’s advice, the type of food, and how often you feed your cat. Weight loss should be slow and steady.

divider 1 paws

Conclusion

Obesity is a serious problem that affects about 60% of cats in the U.S.A. It’s defined as a cat weighing more than 20% of their ideal weight (based on age, activity, and breed) and can significantly reduce their life expectancy and quality of life.

Taking steps to prevent obesity and manage your cat’s weight requires patience and perseverance. The healthier your cat is, the less likely they will develop serious health issues, and the happier they will be.


Featured Image Credit: Odua Images, 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.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Ask Dr. Paola – Help! My Male Cat Gets Into Fights! (March 9, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Why Your Cat’s Poop Smells Like a Biohazard

Nobody enjoys litter box duty, but sometimes it gets unbearable. The smell hits you from across the room. You’re scooping faster, lighting candles,...

RIP Your Furniture? Not With This Guide to Cat Scratch Damage Control

Your couch looks like it survived a minor apocalypse. The curtains have mysterious vertical shreds. That new rug you splurged on is already...

Celebrating 15 Years as the Most Popular Resident of No. 10 Downing Street

For almost 300 years, a rather unassuming Georgian building of black bricks with a shiny black door has been the official residence and...

More related

Can Cats Have Asthma? Vet-Approved Causes, Signs, & Treatment Tips

Though it hasn’t been as extensively studied as asthma in humans, cats can indeed get asthma. Feline asthma can range from mild to...

Do Indoor Cats Need Flea Treatment? Vet-Reviewed Facts, FAQ & Tips

There are a great number of benefits to keeping cats indoors, especially with all the dangers they could face when out and about....

Do Cats Pee & Poop at the Same Time? Vet-Reviewed Feline Anatomy & Behavior Explained

You know you’re a real cat owner when you start to fuss over your pet’s grossest habits, like their bathroom use. But knowing...

Why Is My Cat Not Losing Weight? Vet Approved Reasons & Advice

Weight control is critical for your cat—and you! If you’ve ever tried to shed a few pounds, you know how challenging it can...

Keep reading

8 Best Cat Foods for Kidney Disease in 2026 – Reviews & Top Picks

Kidney disease can seem like a debilitating diagnosis for cats. However, kidney disease can often be controlled through diet. A specific diet is often one of the necessary steps to lessen the effects of kidney disease. Because diet is so...

cat eating from stainless bowl

Why Do Cats Sleep at the Foot of the Bed? 8 Possible Reasons for This Behavior (Vet Reviewed)

Of all the strange things cats do, why do they choose to sleep at your feet instead of snuggling at your chest at night? On average, felines sleep for 16 hours a day, most of which happens in places you...

Can Kittens Drink Milk? Vet-Verified Nutrition Facts & FAQ

There are plenty of feline stereotypes. For example, cats have a reputation for being curious and aloof, which is more or less accurate. Another common stereotype is that kittens love to drink milk, specifically cow’s milk. So, can kittens drink...

Can Kittens Drink Milk

Can Cats Eat Cicadas? Vet-Reviewed Health Concerns

As any cat owner will attest, cats are expert hunters. Their instinct for preying on small, fast-moving objects is baked into their DNA. This instinct and innate skill have been key to their survival. While small mammals like mice are...

Catster_Are Cicadas Toxic to Cats

Can Cats Eat Onions? Vet-Reviewed Risks & Dangers

Any cat owner knows that our felines don’t always make the best choices about what they put in their mouth. Even the pickiest eaters will delight in snacking on your houseplants. So, if your kitty decides to eat either an...

Can Cats Eat Onions

Alternatives to Declawing Your Cat: 8 Humane Options

On paper, declawing your cat might seem like a simple way to stop your furniture from being ripped to shreds, but the reality is that it’s a cruel and painful operation that can lead to long-term pain, discomfort, and behavioral...

cat claw

How Much Cat Litter Per Month Should You Use? Vet-Verified Facts & FAQ

There are many pleasant aspects of cat ownership, but litterbox duty isn’t among them. Still, it is essential to care for your cat, so ensuring that you provide the cleanest litter box possible for your pet is paramount. While litter...

cat sniffing litter in the box

Why Do Cats Sit on Their Toys? 6 Possible Vet-Reviewed Reasons for This Behavior

Cats are strange creatures with adorable, quirky habits that make them endlessly fascinating to watch as they go about their enigmatic feline business around our home. Cat owners have probably seen their cat sitting on their toys for no apparent...

devon rex cat sitting on the bed

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.