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.

Why Do Cats Have Hanging Belly Pouches? Vet-Reviewed Primordial Pouch Explanation

It may seem that no matter how skinny a cat is, it always has a hanging belly. Although it may be easy to chalk this hanging belly up to your cat’s insatiable appetite, it is also because the cat has a primordial pouch that evolved to keep your cat safe and healthy.

To learn what a primordial pouch is and why your cat has it, keep reading.

divider single cat paw oct 2024

What Is a Primordial Pouch?

A primordial pouch is the extra flap of skin that lays under a cat’s belly. It often lies along the entire length of the stomach and is most notable towards your cat’s rear. This flap jiggles and sways as your cat moves and becomes more pronounced the heavier and older the cat gets.

This “pouch” is not a literal pouch since your cat can’t squirrel anything away inside it. Instead, it is simply a layer of skin that is saggier than elsewhere. Because of the sagginess of this pouch, all cats look a little bit fat, even when they are completely in shape.

cat walking outdoor
Photo Credit: Santa3, Pixabay

divider cat faces 2 oct 2024

Why Do Cats Have Hanging Belly Pouches?

In addition to being absolutely adorable, this primordial pouch has served an important function in the existence of cats. Although it’s unclear exactly why this pouch evolved, scientists have three good hunches.

1. Protection

The most sensitive part of your cat’s body is its stomach. The stomach area provides easy access to some of the most sensitive and necessary organs in your cat’s body. This primordial pouch offers a little bit of extra protection to this sensitive area.

You might wonder why cats need extra protection in this area since they often walk on their feet anyway. Whenever cats get into fights, they often use their back claws as a weapon. This motion can easily damage and kill the opposing cat if the back claws strike into a vital organ.

Polydactyl orange tabby cat walking outdoor
Photo Credit: Jenny Margarette, Shutterstock

2. Enhanced Running

If you’ve ever watched cats run before, you know that cats have to stretch out in order to get their fastest stride. With that little extra skin on their stomach, cats can stretch out slightly further since they have extra wiggle room, quite literally. This extra room aids your cat’s running abilities, whether it be running in the hunt or during a fight.


3. Food Storage

In the wild, cats are not always guaranteed a next meal, especially during the winter. Experts predict that the pouch allowed cats to eat more food in a single sitting because hunting success in the wild isn’t always guaranteed.

divider cats oct 2024

What Cats Have the Most Pronounced Primordial Pouches?

All cats have a primordial pouch on their belly, however, there’s no known reason why some cats have a more pronounced pouch than others. Anecdotally, the Egyptian Mau, Bengal, and Pixie Bob tend to have relatively large primordial pouches. The pouch may also be more easily noticed in a hairless breed, such as the Sphynx when compared to long-haired or double-coated breeds.

Bengal Cat Living Room
Image Credit: 성혁 이, Pixabay

How To Tell If Your Cat Is Overweight

With all cats having a primordial pouch as part of their natural anatomy, it might be difficult to assess if the flap you see under your cat’s belly is indicative of an overweight cat or just a very pronounced primordial pouch. Fortunately, there are ways to make this distinction.

For starters, it is important to know what the term overweight means. A cat is considered overweight when their body weight is 10% more than ideal. Cats that are overweight face several issues that a cat in a normal weight range wouldn’t. It’s more difficult for them to groom themselves, they are less mobile, more prone to injury, and more likely to develop insulin resistance. Left unchecked, an overweight cat may end up obese.

Obesity is a serious problem for many cats. It’s important to monitor your cat’s weight carefully to ensure that your pet is as healthy as can be.

Unfortunately, many people mistake the primordial pouch for the cat being overweight. No matter how much weight your cat loses, it’s nearly impossible for them to lose their pouch. So, it’s important to look at other signs of an overweight cat. Here are two quick tricks for determining if your cat is overweight:

Monitor Their Weight At Home

One of the best ways to keep track of your pet’s weight at home is by weighing them every week and keeping a log of their weight. A cat may not readily step onto a weighing scale, so the easiest way to do this is by weighing yourself first, then picking up your cat and weighing yourself again while you hold them. Subtracting your weight from the combined weight of both yourself and your cat will give you your cat’s weight.

The normal weight range for cats depends on their breed, age, neuter status, and gender. You can compare your cat’s weight with a standard for the breed to see if they’re overweight or not.

Consult Your Veterinarian

An easier way to check if your cat is overweight is by having your veterinarian examine them. Your veterinarian can factor in their medical history, management, and nutrition, along with the factors listed above to give you an indication of whether your cat is overweight or not. In addition, your vet can also teach you other tricks you can use at home to determine if your cat is packing on additional weight.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

Preventative wellness PGV mention keep cat healthy Preventative wellness PGV mention keep cat healthy mobile

divider cat paws oct 2024

Final Thought

Even though most cats live a cushy lifestyle today, the same has not always been true for their kind. To make the most out of a meal amid fierce competition, and be protected during a physical confrontation, cats evolved with primordial pouches that are still visible today.

As a result, even the healthiest of indoor cats will have a small primordial pouch. This pouch does not mean that your cat is fat. It simply means that your cat is protected through the same flap of skin used to protect its wild ancestors.


Featured Image Credit: Piqsels

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

Cat Shock Collars: How They Work, Safety Advice & Alternatives (Vet-Reviewed)

Several products are available to train pets, but the shock collar is one of the most controversial. It’s a device more commonly associated...

Why Does My Cat Lie on Me? 5 Vet-Reviewed Reasons

We all love to spoil our cats, so they tend to get new toys and tasty treats more often than we do! Seeing...

16 DIY Cardboard Cat Toys You Can Make at Home (With Pictures)

Watching your cat enjoy a good “hunt” is one of the absolute joys of being a cat companion. But even more importantly, activities...

Chronic Diarrhea in Cats: Our Vet Discusses Signs, Causes & Treatment

Nobody likes it when their cat has diarrhea, the kitty included. Not only is it potentially messy, but it can also be frustrating...

More related

9 Best Cat Grass in 2026 – Reviews & Top Picks

If you’ve shared your home with cats, you know about those who like to chew your houseplants to smithereens. It’s challenging to deal...

F5 Savannah Cat: Info, Pictures, Facts & Origin

The F5 Savannah cat is a gorgeous cross between the domestic cat and the African feline wildcat, the Serval. F5 refers to their...

Cat Water Bowl vs Fountain: Main Differences (With Pictures)

When you first adopt a cat, you’ll need a water bowl waiting at home to keep your pet hydrated. However, you can also...

Can Cats Drink Sesame Oil? Vet Reviewed Nutrition Advice

Sesame oil is one of those “special” oils. Not every house has it in the pantry, like olive oil or coconut oil, but...

Keep reading

How to Choose Cat Food: 10 Vet-Approved Tips & Tricks

Cats and humans have shared a mutually beneficial relationship for roughly 12,000 years. People developed agriculture, which attracted pests, and felines happily acted as pest control. The cat’s role in human society and their subsequent adaptation and domestication provide vital...

tabby kitten eating kibble from the feeding bowl

Why Does My Kitten Bite Me? 5 Vet-Reviewed Reasons

Kittens always look cute but they do not always play cute. These rascally little animals love to roughhouse and explore the limits that their owners put on them. So, it’s no wonder that many of them tend to bite their...

Black cat playing with woman hand and biting a finger

Why Does My Cat Growl? Meaning, How You Should React & FAQ (Vet-Verified)

Pet cats are usually friendly and interactive with their human companions. But sometimes, they display aggressive behavior, such as growling. You may be wondering why cats growl and what it means when they do it. Is your cat acting territorial,...

angry cat hissing

Diamond Naturals Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary Diamond Naturals makes healthy yet affordable food for pet owners. The company makes a wide range of both dog and cat food, including recipes for specific ages and breeds of animals. One of its most popular ranges is...

Diamond Naturals Cat Food

15 Vet-Verified Reasons Your Cat Sleeps Under the Bed: With Tips to Manage Anxiety

Do you ever wonder why your cat likes to sleep under the bed? There are actually several reasons why cats like to do this. In this blog post, we will discuss the 15 most common reasons why cats like to...

Cat Sleeping

Can Cats Eat Takis? Vet-Reviewed Precautions & Health Guidelines

Did you know that cats only have 473 taste buds1? Humans have about 9,000 taste buds. This means that a cat lacks a lot of flavor sensors, mainly sweet and also spicy. These flavors simply don’t register the same as...

Can Cats Eat Takis

Can Cats Eat Cooked Fish? Vet-Reviewed Facts & FAQ

It happens to every cat owner sooner or later. Moments after sitting down to a nice seafood dinner, they begin to feel the watchful gaze of their kitty on them, imploring them to drop something. That’s when they ask themselves...

Can Cats Eat Cooked Fish

Can Cats Eat Black Pepper? Vet-Approved Precautions & Alternatives

People have been peppering their dishes for over 4,000 years since black pepper was first used in India. Since its discovery, it’s only grown in popularity and has become a staple in households around the world. Black pepper has been...

Can Cats Eat Black Pepper

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.