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

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

My Cat Lost a Claw – Do Cat Claws Shed? Vet-Reviewed Facts & Advice

If you’ve found bits of your cat’s claws around the house, the good news is that this is a normal and healthy part...

Can Cats Eat Pringles? Vet-Reviewed Facts & FAQ

Does your cat come running every time you pop open a can of Pringles because he loves the funny-shaped potato chips? If you’re...

25 Best Gifts for Cat Lovers in 2026: Thoughtful, Unique & Out-of-the-Box Ideas

Sometimes finding the perfect gift for your cat-obsessed friends can be tricky, but we’ve curated a list of the purr-fect ideas. Any pet...

Get to Know a Cat Guy: Eliot Even Writes Songs About His Cats!

In this great big world of ours, there are two categories of people: Those who like cats and those who don’t. Actually, maybe...

More related

Why Do Scottish Fold Cats Sit Strangely? Vet-Reviewed Facts & FAQ

If you’re a Taylor Swift fan, you’re probably familiar with the Scottish Fold breed. Swift’s kitties, Meredith Grey and Olivia Benson, are arguably...

Ocicat vs Bengal: What’s the Difference? (With Pictures)

With their wild and exotic appearance, both the Bengal and the Ocicat look as though they’ve just stepped out of the jungle. However,...

Why Does My Cat Bite Me When I Pet Him? 3 Vet-Approved Reasons & Solutions

Cats are not always the most predictable creatures. Sometimes, they adore your petting and practically beg for your attention. Other times, they get...

Bengal vs. Savannah Cat: What’s the Difference? (With Pictures)

Bengal and Savannah cats are both very similar. They are both the result of breeding a domestic cat with a wild cat. Because...

Keep reading

The New Zealand Natural Pet Food Co Brand Review 2026: A Detailed Look

If our kitties could thrive on love and affection alone, they would all live a long, healthy life. Unfortunately, we know it takes more than cuddles and good intentions to keep felines feeling their best. A healthy, happy life starts...

The New Zealand Natural Pet Food

Why Do Kittens Get Worms? How & Treatment Options

Oh no, you’ve recently acquired an adorable kitten, but they have worms! Now, what do you do? Worms are an unfortunate and relatively common occurrence in kittens. While not typically painful, it’s still a somewhat gross problem with which to...

two kittens playing together outdoors

Can Cats Eat Lettuce? Vet-Verified Benefits & Precautions

Cats may be true carnivores, but their curious nature attracts them to all types of human food, including greens. Lettuce is a popular green that may be enticing for cats, but can cats eat lettuce? Is it healthy for them?...

Can Cats Eat Lettuce

Why Does My Cat Lick My Ear? 3 Vet-Reviewed Possibilities

The sandpaper texture of a cat’s tongue unexpectedly plunging into your ear can be quite an uncomfortable shock. If your cat has this strange behavior, you may be chalking it down to just another weird unexplainable feline thing. But the...

bengal cat licking man's face

Why Does My Cat Sleep Face Down? Vet-Verified Behavior Explanation

Cats are odd creatures, and they can often be spotted sleeping in unusual places and positions. We even got the “if I fits, I sits” meme out of cats’ attraction toward boxes and other tight spaces. Cats sleep in some...

cat-sleeping-with-their-face-down

Are Poinsettias Poisonous to Cats? Vet-Approved Facts & FAQ

With their crimson leaves, poinsettias are stunning plants, and most people can’t resist having them in their homes. However, poinsettias have a bad rap; they are said to be poisonous to cats and other pets. It also does not help...

Catster_Are Poinsettias Poisonous to Cats

My Cat Is a Scaredy Cat: 5 Tips to Make Them Feel More Secure

Cats can be apprehensive for all sorts of reasons. If you share your home with a scaredy-cat, finding a neutral ground and saving space for them could be pretty complicated. Certain environmental factors will stimulate different cats. Some might be...

scared British blue-point cat hiding under the bed

8 Best Cat Foods to Prevent Vomiting in 2026 – Reviews & Top Picks

One of the most frustrating things for a cat owner is when their cat is frequently vomiting. It will often be something simple like a hairball or a recent change in food and should pass quickly, but if it turns...

tabby cat eating from metal bowl

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.