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

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

Why Does My Cat Sleep Pressed Up Against Me? 5 Possible Reasons

Cats are interesting creatures that seem to be mostly content by themselves. It’s not unusual to find your cat curled up on your...

cat-sleeping-on-owners-lap

Why Do Cats Sleep So Much? 6 Vet-Approved Reasons

Chances are that while you’re reading this article, it’s probably quite likely that your cat(s) are sleeping: on your lap, in the sink,...

cat sleeping on the patio

Why Does My Cat Cross Their Front Paws? Does This Mean They Feel Relaxed?

Cats are curious creatures. Their behavior can be hard to decipher, but some actions are clearer than others. For example, if your cat...

ginger polydactyl cat hiding face with large paws

Will My Cat Suffocate if They Sleep Under a Blanket? Vet-Approved Facts & FAQ

Once you bring a cat home, it won’t take long for them to find a blanket, a comforter, a scarf, or another type...

grey and white cat under the blanket

More related

ginger polydactyl cat hiding face with large paws

Why Does My Cat Cross Their Front Paws? Does This Mean They Feel Relaxed?

Cats are curious creatures. Their behavior can be hard to decipher, but some actions are clearer than others. For example, if your cat...

ginger cat stretching after waking up from nap

7 Favorite Cat Stretches (With Infographic)

Nearly every feline owner has witnessed their cat stretching in adorable ways. Cats stretch for similar reasons we do—it feels good, eases tight...

cat-sleeping-on-owners-lap

Why Does My Cat Lay on My Stomach? 5 Vet-Verified Reasons

When you’re sitting still or lying down for long enough, it’s perfectly normal for your cat to come around and try to spend...

cat rubbing its head on the bathroom floor

Why Does My Cat Sleep in the Bathroom? 8 Vet-Verified Reasons

Cats are strange animals, and that’s part of the reason we love them. Sometimes, though, they can act downright bizarre and become obsessed...

Keep reading

Is Hibiscus Poisonous to Cats? Vet-Reviewed Houseplants Examined

Hibiscus plants produce gorgeous, colorful flowers and are relatively easy to grow in pots to keep indoors. If you’re growing these plants and your cat won’t leave them alone, you’re surely feeling frustrated. You’re probably even wondering if your cat’s...

Catster_Is Hibiscus Poisonous to Cats

Why Does My Cat Bury Their Head? 7 Vet-Reviewed Reasons

Cats have many cute habits, one of which is their tendency to bury their head while they sleep. Regardless of whether you’ve owned cats all your life or have only recently adopted your first feline, most cat owners are familiar...

Striped grey cat curled up in bed

4 Everyday Noises That May Be Scaring Your Cat

While thunder and fireworks can surely terrify Fido, can these noises scar your cat? There are many everyday sounds that felines find disturbing and are the cat equivalent of fingernails being drawn across a chalkboard. But what noises could be...

scared kitten hiding

Cat Person Wet Cat Food Review 2025: Our Expert’s Opinion

Cat Person Food is a subscription-based cat food company that delivers high-protein, minimally processed food to your door. They utilize only human-grade ingredients and have several recipes to choose from. Their wet food is made with either real, shredded meat...

Cat Person Wet Cat Food Review

Do Long-Haired Cats Need Baths? Vet Approved Grooming Advice

Most felines are notorious for disliking getting wet, so bathing a cat might seem challenging. The good news is that most cats rarely need baths! But what if you have a long-haired cat? With all that hair, do they require...

gray cat newly bathe

9 Best Cat Meal Toppers in 2025 – Reviews & Top Picks

Disclaimer: Before changing your cat’s food or offering new ingredients, consult with your veterinarian. Pets that are on a prescription diet or suffer from certain ailments may need to avoid certain food ingredients.Caring for a cat certainly has its ups...

Grey domestic cat being given food in a bowl

5 Cat-Safe Incense Alternatives for Your Home: Vet Approved Advice

Incense is used in many homes to freshen the air in the home and cover unpleasant smells. Unfortunately, it is generally not considered safe for homes with cats. The exposure to the smoke from the incense can be irritating to...

Close up to Mint leaves in a pot

Can Cats Eat Fritos? Vet-Approved Alternatives & Risks

Our cats love getting into all kinds of goodies in the home. Fritos might be an odd request for most cats, but some cats may be attracted to the salty snack. If you find that your cat is drawn to...

Can Cats Eat Fritos