What is a cat's primordial pouch? Explaining its purpose and how it differs from obesity

Your cat's saggy, swaying belly is so cute, isn't it?

You might worry if it's obesity or metabolic syndrome, but it's actually something unique to cats called the "loose skin."

This time, we'll focus on your cat's loose skin, explaining its lesser-known roles and how to distinguish it from obesity or illness!

What is a cat's loose skin?

Also known as "tummy rolls," a cat's loose skin refers to the "sagging" area extending from the belly to the hind legs.

When a cat walks, it sways widely from side to side, often leading people to think the cat is fat. However, these tummy rolls are actually stretched and saggy skin. Since it's not fat, a saggy belly doesn't necessarily mean the cat is obese.

Actually, "loose skin" is a Japanese English term, and the official name is "Primordial Pouch." This translates literally to "primitive pouch."

What is the role of a cat's loose skin?

Since large felines like lions and tigers also have loose skin, it is believed to play an essential role in their survival in the wild.

Avoiding fatal injuries and protecting the belly

A cat's belly is very soft and a vulnerable area.

In fights or when attacked by enemies, loose skin makes it harder for claws or fangs to reach internal organs. It also helps cushion blows to the abdomen, preventing fatal injuries.

It seems that cat breeds closer to wild species tend to have more prominent loose skin, so the role of "protecting the abdomen" appears to be significant.

To make it easier to move the hind legs

Cats hunt by "ambush." Even when they're playing, their acrobatic movements, starting with a wiggling bottom, are astonishing.

To exhibit a cat's characteristic explosive agility, the hind legs need to move significantly. Therefore, a cat's joints are flexible, and their range of motion is very wide.

Furthermore, it's crucial for the skin around the hind legs to stretch well. Thanks to the loose skin on their belly, they can move quickly without their skin stretching taut even when moving their legs widely.

To eat a lot at once?

There are various theories, but in the wild, it's uncertain when prey will be available, so it's also believed that loose skin exists to allow for "binge eating."

Differences and ways to distinguish between loose skin and obesity

 Reference: Ministry of the Environment "Pet Food Guidelines for Owners"

At first glance, loose skin can look like obesity, but are there ways to tell the difference?

A common indicator for assessing a cat's obesity level is the BCS (Body Condition Score). Let's use the diagram above to check if your cat is obese.

Try feeling it

First, gently feel your cat's saggy belly.

If it feels like you're only touching skin, with a soft and supple sensation, it's likely loose skin. If it feels like there's soft, squishy fat beneath the skin, there's a higher chance of obesity.

Look from above

In the case of loose skin, the cat typically has a normal physique apart from the prominent saggy belly. With obesity, fat also accumulates on the neck and back, making the cat appear rounder overall.

According to BCS, a cat is considered to have a standard physique when a slight waist can be seen when looking down at the cat standing.

Could it also be an illness?

If you feel a lump-like sensation when touching your cat's belly, it might be caused by inflammation or a tumor.

Additionally, if the belly is bloated and firm, it could be due to ascites (fluid accumulation in the abdomen) caused by some illness.

If you notice any abnormality in your cat's belly, consult a veterinarian immediately.

At what age does loose skin appear? What are the characteristics of cats prone to it?

Some cats have prominent loose skin, while others have hardly any.

Are there specific ages, genders, or lifestyles that make loose skin more likely to develop? Let's delve a little deeper into feline loose skin.

Loose skin appears in adult cats aged 1 year or older

During kittenhood, their bellies are round and plump, without any loose skin.

As they grow and their bodies get larger, loose skin gradually develops. Many cats develop loose skin during their adult stage, around one year of age.

Loose skin can also develop in slender cats, so there doesn't seem to be a correlation with body type.

Are cats more prone to loose skin after pregnancy or spaying?

Female cats that have been spayed, or have been pregnant and given birth, can also experience sagging skin on their bellies. However, this sagging belly skin is not the same as loose skin.

Which cat breeds are prone to loose skin?

Generally, cat breeds that are closer to wild species, such as American Shorthairs and Bengals, are said to be more prone to developing loose skin.

However, the likelihood and extent of loose skin developing depend on the individual cat, so there isn't much difference based on breed.

Summary

A cat's saggy belly is very adorable, and many cat owners find it charming and comforting. (Our very own Chacha's impressive loose skin image has even gone viral on Twitter!)

The formal name for a cat's loose skin is the primordial pouch, and it serves to protect the abdomen from attacks and increase the range of motion of the legs. Beyond being cute, it has important, lesser-known roles.

Loose skin is often mistaken for obesity, but it can be distinguished by examining the feel and shape of the abdomen.

Furthermore, sagging belly skin can also be a sign of illness. While managing your cat's weight, perform self-checks through regular bonding and physical interaction.