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 Sleep in a Ball? 3 Possible Reasons

cat sleeping on the patio

There’s something delightful about watching your cat sleep while curled up into a tight fluff ball. They look so sweet and serene, and it’s amazing how their supple bodies can sleep comfortably in this position.

If you have ever wondered why your cat prefers to sleep in a ball, you will be intrigued by the reasons but also not surprised to know that they choose this position for the same reasons you choose your sleep positions.

In this article, we’ll discuss the three main reasons why you usually find your cat in a ball of fur, along with some other positions that they may prefer.

divider 2 cats

The 3 Possible Reasons Why Cats Sleep in a Ball

1.  It’s Warm

Sleep is always better when you are warm, and it’s the same for our feline friends. When cats curl up into a ball, they conserve body heat better, which means more comfort and better sleep. By reducing the surface of their body, when curling into a ball, and tucking in their legs and head, their body heat is better preserved with less loss, which is especially helpful in the cold winter months. This way their internal organs are also protected, in case there would be a predator on the lurk, which is luckily not the case with our pet cats.

Cats also have a body temperature range of 101.0 to 102.5°F, which is much warmer than our average body temperature. Curling up into a ball helps them to retain that extra warmth.

Cats are not the only mammals to assume this position to keep warm; dogs do it too, and if you think of yourself on an extra chilly night, you may curl up into the fetal position to keep warm.

However, be mindful that cats may also sleep in this position more if they are feeling unwell. So, if you have noticed your cat being quiet or lethargic, sleeping more than usual, or eating less, it’s important to get them checked by a vet as soon as possible.

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

2. It’s Safe

Cats are natural predators, and while sleeping allows them to relax and recharge, it also makes them vulnerable as they are not on guard and ready to defend themselves from potential threats. Sleeping in a ball allows cats to feel safe. This position allows them to protect their face and vital organs.

When you are curled up while sleeping, you feel an extra sense of security and comfort, just like when a blanket covers you, and you feel more exposed when it is removed. This small comparison can help you understand why cats, and other animals, may feel safer and less vulnerable when curled up in a ball.


3. It’s Comfortable

Comfort could be the reason your cat chooses to sleep in a ball. This position could be a comfy favorite, which led it to become a default position. Cats can curl up into a ball just about anywhere: on the bed, your furniture, in backpacks, and in their favorite human’s lap. It is also a practical sleeping position.

Is there anything better than a happy cat? We don’t think so—that’s where the Hepper Nest Bed comes in.

Hepper Cat Nest Bed
  • HAPPY COZY CATS - Your kitty will bask in luxurious sherpa-lined comfort while feeling warm, safe,...
  • MODERN DESIGN - Contemporary styling with upholstered fabric construction; just like your human...
  • WARM FLEECE LINER - Self warming, thick sherpa fleece with microfiber trim.

This product was designed with both your and your kitty's happiness in mind. While the comfortable bowl shape and wide lip to rest their heads on are ideal for sleepy kitties, you’ll appreciate the removable and machine-washable fleece liner for easy cleaning. It doesn’t get any better than this! Click here to try it out.

At Catster, we’ve admired Hepper for many years and decided to take a controlling ownership interest so that we could benefit from the outstanding designs of this cool cat company!

divider 1 paws

Other Sleeping Positions

Although a curled-up ball is a favorite sleeping position among cats, there are other positions where you can find your cat catching some Z’s. Most sleeping postures put cats in a more vulnerable position.

You are free to use this image but we do require you to link back to Catster.com for credit

Belly Up

Belly up, or on their backs, is the cutest but most vulnerable position for a cat to be sleeping in. This position leaves their bellies fully exposed while their legs are stretched out in front and below their bodies. You will not often see a cat in this position, but if you do, it means they feel confident and very safe. While giving your cat a little rub on their exposed belly is tempting, it’s best not to interrupt their rest.

An orange tabby cat sleeping on a bed.
Image Credit by: Aksenovko, Thinkstock

The Superman

The Superman position is self-explanatory, except that your cat in this position is on a surface and not in midair. If your cat is sleeping in a Superman position, you will find them face down, on their belly with their front and back legs stretched out. This position allows cats to feel comfortable while protecting their bellies, and if they assume this position on a fleece blanket, it can help them keep cozy and warm.

On the contrary, if the air temperature is warm, this position allows them to expose their bellies to a cold surface to help cool them down.

The Loaf Shape

The loaf-shaped sleeping position resembles a loaf of bread, just as its name suggests. Their paws are curled under their body, and their head remains upright. It is a warm, comfortable, and relaxed position that allows them to pounce into action if necessary.

On Their Side

You will find your cat on their side when they feel safe around you. They will lie on their sides with their legs stretched out, which exposes their bellies. This position makes it easier for them to jump and run, which makes them feel more prepared while sleeping and therefore helps them get a restful sleep. Most cats that sleep on their side already have the needed warmth and find this position more comfortable.

divider 2 cats

Conclusion

You will usually find cats curled up in a ball while sleeping because, other than the fact that it is comfortable, it also provides warmth and safety. Once they are curled up, they can sleep comfortably and deeply, knowing that they are secure and warm. Sleeping in a ball is a favorite feline position, and although you may find your cat in a few other postures, a curled-up ball is quite common amongst felines.

If you experience your cat sleeping belly up, you will be happy to know that they feel safe and secure enough to sleep in such a vulnerable position, but don’t think that means you can avoid a mild hand attack if you go in for some belly rubs!

Sources

Featured Image Credit: hapibu, Pixabay

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

How to Stop a Cat From Licking Everything: Our Vet Discusses Reasons, Remedies & FAQ

You know that cats groom themselves, so you’re not surprised to see your kitty licking until you realize they’re constantly licking things. Is...

Penguin CBD Cat Supplement Review 2025: A Detailed Look

Whether your kitty is anxious, overstimulated, or just keeping you up at night, CBD can help. This natural compound is purr-fect for...

How to Get a Stray Cat to Trust You: 6 Vet-Approved Tips & Tricks

Do you have a beautiful stray that lingers in your neighborhood? You might want to make friends with them, but it will prove...

Acupuncture for Zazzles: Dr Karyn & Holistic Treatments for Cats

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

More related

255 Barn Cat Names for Your Outdoor Friend

If you own a large enough property or work on a farm, most likely, you have a barn cat on rodent-killing duties. Also...

Osteochondrodysplasia in Scottish Folds: Vet Approved Signs, Causes & Care

Scottish Fold cats are sweet, mellow, laid-back, and fun. They’re known for their folded ears, chubby faces, and sweet temperaments. The breed’s folded...

Eating Disorders in Cats: Signs, Causes & Treatment (Vet Answer)

If your cat is like most, they live a fairly happy-go-lucky lifestyle with ample time to groom, sunbathe, and nap. It may seem...

When Is Kitten Season? Quick Vet-Reviewed Facts

Do you know what kitten season is? If not, you’re about to find out! If you’ve ever been involved in rescuing or fostering...

Keep reading

Smalls vs Nom Nom: Pros, Cons & Facts (2025 Update)

Disclaimer: Nom Nom has discontinued its fresh cat food recipe and is no longer taking orders. Nom Nom hopes to return to providing fresh food to cats in the future when they have more readily available high-quality ingredients. We have...

Smalls VS Nom Nom

How to Use Cat Litter Deodorizers: 5 Vet-Approved Tips & Guidelines

It can be hard to mask the smell of cat litter when you share your life with cats. The last thing you want to do is walk in the door and inhale that intense, distinct odor. Many people resort to...

orange cat beside litter box

Can Cats Eat BBQ Sauce? Vet-Reviewed Facts

Firing up your grill for a barbecue dinner, lunch, or snack is a delicious way to enjoy a meal. However, most barbecues typically involve cooking meat, which is likely to interest your cat. Most meat, particularly if it isn’t seasoned,...

Can Cats Eat BBQ Sauce

How Contagious is Feline Leukemia? Vet-Approved Facts & Explanation

Feline leukemia virus (FeLV) is a common infectious cause of disease in cats, affecting as much as 3% of the entire cat population in the United States and Canada,1 according to the Cornell Feline Health Center. Feline leukemia virus is...

cat lying on blanket looking sad or sick

Why Do Cats Like Milk? 2 Vet-Approved Reasons & FAQ

A cat lapping at a bowl of milk is something that we all think of when it comes to felines. This perception comes from farm cats from bygone eras lapping at the fatty topping of unprocessed cow’s milk and popular...

two cats drinking milk from the same bowl

Do Female Cats Spray? Vet Approved Facts & FAQ

It’s a common misconception that only intact male cats spray. The truth is spraying is not a sex-specific feline behavior. Female cats can and do spray. Having a female cat that sprays at home can be frustrating, especially if you...

a white cat spraying the wooden gate

How to Give a Cat a Bath Without Water: Vet-Approved Step-by-Step Guide

Most cats don’t like to get baths. The good news is that cats are excellent groomers and usually keep themselves clean enough, so baths aren’t necessary. However, sometimes your cat needs help keeping clean, and a bath is required. If...

toyger kitten wrapped in a towel

Can Cats Eat Prosciutto? Vet-Approved Nutritional Advice & FAQ

One might not think cats would be beggars like dogs when it comes to our food, but they can be! If your cat is constantly up in your meals, trying to get a taste of what they’re sure is delicious,...

Can Cats Eat Prosciutto