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.

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!

Preventative wellness PGV mention keep cat healthy Preventative wellness PGV mention keep cat healthy mobile

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.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Welcome to Coastal Cats & Critters

As much as we all love cats, we also know that in many parts of the country (and the world), the problem of...

Ask Dr. Paola – Help! My Cat Suddenly Has Dandruff! (March 30, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Your Cat Keeps Vomiting After Eating: Here’s What’s Going On

Cats vomit. It’s one of the less glamorous facts of life with a feline, and most cat owners have cleaned up more than...

Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

Can CBD Help a Cat With Anxiety? Exploring Alternatives

There have been no scientific studies that investigate the impact cannabis has on pets, but many pet parents are turning to it for...

How to Keep Cats Away From Chickens: 8 Vet-Approved Tips

Keeping chicken flocks has become increasingly popular globally. Many urban homesteaders and families interested in having fresh eggs are keeping chickens, often introducing...

How to Protect Bird Nests From Cats: 12 Effective Vet-Verified Ideas

Be they feral cats, loose strays, or wandering outdoor pets, cats kill millions of wild birds each year 1. While the felines aren’t...

Can Cats Eat Squash? Vet-Verified Nutrition Facts & FAQ

Squash is a large fleshy fruit, although it’s often mistaken for a vegetable and is usually considered so in recipes and cooking instructions....

Keep reading

Why Does My Cat Keep Sneezing? 7 Vet-Verified Causes

Sneezing in cats has several causes. Cats sometimes sneeze to get rid of tickles in their noses, but the reflex can also be a sign of a severe illness. It’s not a huge deal if a cat sneezes once or...

Cat sneezes making funny expression

Can Stress Cause a Heart Murmur in My Cat? Here’s What You Should Know

Normal, healthy cats can get temporary heart murmurs due to stress1. The adrenaline and cortisol released into their bloodstream in stressful situations cause temporary changes to their cardiovascular system. However, this isn’t necessarily a problem. The heartbeat goes back to...

nebelung cat in vet clinic

Can Cats Eat Onions? Vet-Reviewed Risks & Dangers

Any cat owner knows that our felines don’t always make the best choices about what they put in their mouth. Even the pickiest eaters will delight in snacking on your houseplants. So, if your kitty decides to eat either an...

Can Cats Eat Onions

Cat Life Stages Explained (Plus 12 Vet-Approved Tips To Improve Their Wellbeing)

It’s not uncommon for cats to live well into their 20s, and certainly into their late teens, largely thanks to improved healthcare and nutrition, but also as a result of greater awareness from owners. The basic route to providing a...

young woman holding cute siberian cat with green eyes

Your Cat’s Red Butt Has Entered the Chat (And Your Face)

Your cat demands attention in the most dramatic way possible: tail straight up in the air, rear end directly in your face. It’s a classic feline power move. But this time, something looks off. The area around their anus is...

woman looking at cat's butt

Why Do Cats Twitch in Their Sleep? 3 Vet Reviewed Reasons

Just like people and other animals, you may notice that your feline sometimes twitches in their sleep. As you might guess, this is pretty normal behavior. Lots of cats twitch in their sleep, though some are more prone to this...

Fat Calico Cat Lying or sleeping on a Perch in the Window sunbathing

Why Does My Cat Try to Climb Walls? 4 Vet Reviewed Causes & What To Do

Cats are mysterious creatures. Their independent and secretive nature makes them quite fascinating. They also have a unique set of behaviors that make them stand out from other domestic animals like dogs and horses. Cats are curious, agile animals with...

kitten trying to climb wall

Can Cats Eat Seaweed? Vet-Approved Nutrition Facts & FAQ

It is no secret that most cats are fans of fish, and if you have a particularly keen cat, they might try to scoop fish out of your fish tank! Tuna and cats, for example, have been linked for generations....

Can Cats Eat Seaweed

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.