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!

PangoVet_Mention-in-Content for PangoVet2 save money

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 Spinal Injury: Signs, Causes & Treatments (Vet Answer)

If your cat’s mobility is suddenly impaired, they are in pain, their limbs are stiff or weak, they have lost their balance, they...

Can Cats Eat Ranch Dressing? Vet-Approved Nutritional Facts & FAQ

Ranch dressing is popular in the United States. It was once only used as a salad dressing, but now, the tangy mixture is...

Why Do Cats Get the Zoomies After They Poop? 4 Vet-Verified Possible Reasons

Has your cat been acting strange after they poop? Perhaps they meow loudly and run manically around the house for a few minutes,...

How Long Does It Take for Cat Laxatives to Work? Our Vet Explains

Constipation is no joking matter, and it’s a condition that we see in cats more often than you might think. Hairballs, dehydration, neurological...

More related

8 Common Cat Spay or Neuter Surgery Complications: Our Vet Explains Important Facts

It is widely accepted that neutering (spaying or castration) is part of being a responsible feline parent. Aside from stopping urine spraying, monthly...

6 Best Scratching Posts for Maine Coon Cats in 2025 – Reviews & Top Picks

Maine Coon cats are well-known for their playful personalities and large size. Maine Coons have muscular bodies, large paws, and can weigh more...

How to Train Your Cat to Use a Cat Door: 6 Vet-Approved Tips

Whether you’re installing a cat door in your home for the first time or have just moved somewhere that already has one, it...

Is the Buttercup Toxic to Cats? Vet-Approved Facts & FAQ

The buttercup plant (Ranunculus acris), also known as butter cress or figwort, is a member of the Ranunculaceae family (that’s a mouthful!). It’s...

Keep reading

How to Care for an 8- to 12-Week-Old Kitten (Vet-Verified)

Eight to ten weeks old is usually when many breeders and shelters let you take your kitten home, and while they’re certainly adorable at this age, they also have some additional care requirements. It can be a lot to keep...

Can Cats Eat Quinoa? Vet-Reviewed Facts to Know

Quinoa has become known as a superfood for humans. We can add it to just about anything to enhance the texture and nutrients within a meal. However, can our feline friends enjoy this food too? Yes, cats can safely eat...

Can Cats Eat Quinoa

Pure Vita Cat Food Review of 2025: Recalls, Pros & Cons

Review Summary Pure Vita Cat Food includes wet and dry food, but the wet food has higher-quality ingredients than the dry food. The dry food lacks some essential vitamins and minerals, while the wet food range is nutritionally well-balanced and...

Pure Vita Review

Are String of Turtles Toxic to Cats? Vet-Reviewed Safety Tips & Facts

If you’re a cat parent and plant enthusiast, you know that it’s vital to choose your plants according to your liking and while considering your feline’s safety. Unfortunately, many common houseplants are toxic to cats, which is why you need...

How to Calm Your Hyper Cat: 9 Vet-Approved Tips

Cats have different energy levels, depending on their health, breed, and age. Kittens, for example, are more energetic than most older cats. Some breeds have more energy and agility, bouncing around the house and shredding all your curtains. If your...

blue tabby maine coon cat running outdoors

Do Cats Have Eyelashes? Vet-Reviewed Anatomy Facts & Conditions

Cat eyes are fascinating animals to observe, but have you ever wondered if your cat has eyelashes? If you ask this question, you’re likely going to get mixed answers. Some people say yes, and others are adamant that the answer...

Blue-eyed ragdoll close up

Can Cats Eat Artichokes? Vet Reviewed Facts & Safety Guide

Artichokes are delicious vegetables that can be savored as treats. There are many ways that you can enjoy artichokes, and they also happen to have nutritional benefits. If you want to share something you enjoy with your beloved cat, you...

Can Cats Eat Artichokes

Why Is My Cat Acting Weird? 5 Vet-Reviewed Reasons

Some cats display what many owners would consider odd or weird behavior regularly. Others settle into a routine and can be quite predictable. This predictability makes changes in behavior even more obvious. If your cat is showing sudden changes in...

a woman holding a cat on her lap