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 Stick Their Tongue Out While Sleeping? 4 Vet-Reviewed Possible Reasons

Share

ginger cat sleeping with tongue out

Cats stick their tongues out often, usually to the delight of their owners. You may even notice your cat sleeping with their tongue out, which can be alarming.

There are a few reasons for your cat to be sticking their tongue out, ranging from relaxation to dental disease. Here are the four possible reasons your cat may sleep with their tongue out.

divider 3 paws

The 4 Reasons Why Cats Stick Their Tongue Out While Sleeping

1. Your Cat Is Relaxed

Many cats mainly stick their tongues out while sleeping because they’re relaxed. There’s usually no cause for concern if your cat sleeps deeply and has their tongue sticking out a little bit. It’s just a sign that your cat is at ease.


2. It’s Breed-Related

Some flat-faced cat breeds, known as brachycephalic breeds, may have limited space in their mouths, causing their tongues to stick out slightly. These breeds include the Burmese, Himalayan, and Persian cats. While this can be a normal feature for these cats, it’s essential to monitor their respiratory health, as the shape of their heads can sometimes lead to breathing issues.

If you notice signs such as noisy breathing, labored respiration, or any other difficulties, it’s best to consult your veterinarian for guidance to ensure your cat’s well-being.

Cream Himalayan Cat
Image Credit: Linn Currie, Shutterstock.jpg

3. There May Be Dental Issues

If your cat has dental issues, they may stick their tongue out while sleeping and during normal daily life. It could be because something is preventing your cat from holding their tongue in place, like oral pain or even a tumor in their tongue. Something could also be trapped at the top of your cat’s mouth or throat. If you suspect this, you must make an appointment with your vet.


4. Your Cat Has an Inflamed Tongue

If your cat has only recently been sleeping with their tongue out, it could indicate that something has caused their tongue to swell, such as an insect bite or exposure to something toxic or caustic. You can try to open your cat’s mouth and check your cat’s tongue to see if it looks swollen or abnormal.

tabby cat sleeping
Image Credit: Wirestock Creators, Shutterstock

divider 3 paws

Are There Other Reasons Cats May Stick Their Tongues Out?

Aside from sleeping, your cat may stick their tongue out for other reasons. The Flehmen response is one of those reasons. When your cat smells something in the air, sticks out their tongue, and scrunches their face up. This is to get more information about what they are smelling in their environment, which they do by transferring the scent to the Jacobson’s organ in the roof of their mouth so that it can travel to their brain. They’re essentially “tasting the air”.

Cats may also stick out their tongues if they are experiencing nausea or motion sickness. This is often accompanied by flicking the tongue and licking the lips excessively, as well as other signs like drooling, reduced appetite, or vomiting.

Some health conditions, such as neurological diseases, can cause your cat to stick out their tongue. This will usually happen with abnormal tongue movements, odd movements, and excessive grooming. Respiratory infections and blockages can also cause your cat to stick their tongue out to breathe more easily, often accompanied by signs like gasping for air, labored breathing, and blue-tinged gums.

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

When to Call a Vet

In most cases, your cat sticking their tongue out while sleeping is nothing to worry about—especially if they’ve been doing this as long as you’ve had them. Like other quirks, if you notice your cat suddenly sleeping with their tongue out or other abnormal behaviors like labored breathing, an abnormal gait, loss of appetite, or drooling, it’s best to make an appointment with your vet for a checkup.

veterinarian checking the mouth of cat
Image Credit: PRESSLAB, Shutterstock

divider 3 paws

Conclusion

When cats sleep, they often get so relaxed they stick their tongues out. This is usually not a cause for alarm, but there can be other reasons your cat is sticking their tongue out, such as health conditions. If you are worried about your cat’s behavior or notice other signs, scheduling an exam with your vet is best.


Featured Image Credit: Soja Som, Shutterstock

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.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

Feline Upper Respiratory Infection: Vet Reviewed Causes, Signs & Care

Respiratory infections are unfortunately pretty common in cats, but are they something your cat will get over, or do you need to take...

Chlamydia in Cats: Our Vet Explains the Signs, Prevention & Treatment

You’ve probably heard about chlamydia, but maybe not in reference to your feline friends. In kitties, chlamydia infections often take on the form...

Why Do Cats Stretch When They See You? 5 Vet Verified Reasons

Picture this. Walking in your front door after a long, grueling day at work. The house is quiet, but then you hear it...

Solid Gold Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary Solid Gold pet food was launched in 1974 by Sissy Harrington McGill. As a Great Dane aficionado, she noticed that European...

Keep reading

Are Petunias Poisonous to Cats? Vet Approved Houseplants Examined

Cats are known for being curious and getting into things that may not necessarily be great for them. After all, they are animals, right? Not too different from curious pups, rabbits, or even pet guinea pigs. It’s in their nature...

Catster_Are Petunias Poisonous to Cats

The History of Commercial Pet Food: Invention & Timeline

Most cats and dogs today eat commercial pet food, but when was pet food invented, and at what point did it become popular? Dry biscuits for dogs were first sold around 1860 in the UK and were the creation of...

What Causes Mouth Ulcers in Cats? Our Vet Explains Signs, Causes & Prevention

Mouth ulcers in cats are spots in a cat’s mouth that can cause them to drool and not eat and intensify their bad breath. But there’s more to this condition in cats than just those signs. In fact, mouth ulcers...

veterinarian checks mouth of the maine coon cat

The Importance of Regular Cat Checkups: 4 Vet Reviewed Benefits

Cats are biologically very different from humans, but what they have in common is a need for regular wellness checks. Even healthy cats should be examined at least once a year by a qualified veterinarian to ensure they are fit...

vet checking up the cat

Why Did My Cat Poop on My Bed? 8 Possible Reasons & Solutions

If you’re ready to hit the hay, the last thing you want to deal with is a fresh pile of cat poop on your bed. But you’re probably here because your sweet kitty has been using your sleeping space as...

Black Sphynx cat lying on the bed

7 Best Cat Shampoo in Canada in 2026 — Reviews & Top Picks

Are you thinking about giving your feline friend a makeover? Perhaps you’ve noticed that Fluffy has been leaving an unappealing smell around the house, or maybe your cat simply needs a good cleaning. Either way, you might be wondering what...

cat in bathtub

Why Do Cats Thump Their Tails When Lying Down? 6 Vet-Verified Reasons

If you’ve ever owned a cat, you’ve probably noticed that they sometimes thump their tail while lying down. Usually, this is nothing to be concerned with, as cats do “wag” their tails while lying down for various reasons. However, you...

Cat wagging thumping tail in bed sunshine

Are Poppies Toxic To Cats? Vet Approved Facts & FAQ

Cats are intelligent creatures that usually avoid things that can hurt them. However, sometimes curiosity gets the best of them, and if your cat decides to eat some plants, including poppies, they can harm them. Poppies are used to make...

Catster_Are Poppies Toxic to Cats

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.