Get

In Your Inbox

Dogster 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 Dogs Stick Their Tongue Out? 7 Vet-Reviewed Possible Reasons

Share

pitbull terrier mixed dog leaning on the bench with tongue hanging out

When you think about a dog, you probably imagine them with their long, pink tongue lolling out their mouth in a big, doggy smile.

Dogs use their tongues for many things, and when they stick out of their mouths, they can look incredibly adorable. But if you’ve ever wondered why your dog’s tongue seems to hang out for no apparent reason, we go over the possible reasons that this happens here.

Dogster divider_v2_NEW_MAY_24_

The 7 Possible Reasons That Dogs Stick Their Tongue Out

1. Panting

This is an obvious reason, but it still counts. Panting helps cool dogs down through evaporation. But dogs pant for other reasons than being hot. They may pant after exercise and when they’re stressed.

Border Collie dog with tongue sticking out
Image Credit: Lioneska, Shutterstock

2. Relaxation

You might notice your dog’s tongue sticking out when they are deeply relaxed. This might occur after they have enjoyed a particularly tasty meal or an excellent belly rub. This tends to be a temporary thing, but it can certainly indicate a happy and relaxed pup.

Dogs may also lick their lips or flick out their tongues when they’re feeling nervous or stressed, so it is important to interpret the sticking out their tongue with the rest of their body language and in the context of the situation.


3. Dental Issues

If a dog is having dental problems, it could lead to their tongue hanging out. This could be due to periodontal disease leading to discomfort and inflammation in their mouth. It could also be if they are missing some of their front teeth, creating a gap that their tongue sticks through.

Cleaning the dogs tooth with dental finger wipes
Image Credit: Venus Angel, Shutterstock

4. Oral Tumors

Dogs with oral tumors or masses—which may or may not be malignant—can cause swelling of the tongue. The masses and growths may also take up too much space in the mouth, which can lead to the dog sticking out their tongue.


5. Inflammation of the Tongue

Inflammation of the tongue is called glossitis, and it may cause a dog’s tongue to stick out. It may occur on its own or in conjunction with more general inflammation of the mouth (stomatitis) and gums (gingivitis). Glossitis can have many different underlying causes, including wounds, infection, trauma, irritation, chemicals, insect stings, and electrical burns. Drooling and a reluctance to eat are common signs.  The cause needs to be investigated and treated by your veterinarian.

vet checking up dog in vet clinic
Image Credit: SUKJAI PHOTO, Shutterstock

6. Flehmen Response

The flehmen response in canines occurs when they find a particularly interesting odor. They will typically curl up their lips, exposing their teeth, and sometimes lap their tongues, which is why it’s also called “tasting the air.” Dogs have a scent-detecting organ in the roof of their mouth called the vomeronasal organ (VSO), and when they open their mouths and lap the air, they allow the pheromones into the VSO.


7. Hanging Tongue Syndrome

If your dog’s tongue always sticks out, it could be what’s referred to as ‘hanging tongue syndrome’. This syndrome typically affects flat-faced dogs whose mouths are too small and don’t have room for the tongue, so it naturally hangs out. The jawbone can also be abnormally shaped and unable to adequately support the tongue. Damage to the nerves that control the tongue can also cause the tongue to hang loosely.

Closed up smiling Boston Terrier showing her tongue and bending ears in backyard under natural light
Image Credit: SivaNattharom, Shutterstock

dogster face divider

Should You Worry If Your Dog’s Tongue Is Sticking Out?

As their owner, you’re the person best suited to determine if there’s a problem with your dog. You should be able to tell the difference between normal panting and abnormal panting, for example. If your dog’s tongue is sticking out for an extended period, speak to your vet.

If your dog is panting excessively and if there are other signs, such as inappetence or lethargy, a visit to your vet is in order. Your dog might be suffering from an emergency health condition like heatstroke. If your dog’s tongue is sticking out for a long period and you’re unsure of the cause, your vet should check their tongue and mouth for any masses or dental issues.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our 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 Savings V1

Hanging Tongue Syndrome

If your dog has hanging tongue syndrome, it’s usually okay if their tongue hangs out most of the time. But you’ll need to ensure that they have plenty of water to prevent it from drying out. Regularly check that the tongue isn’t cracked, bleeding, or swollen.

You should also monitor their tongue for changes in color, which might indicate an infection. If you live in colder climates, frostbite can be a concern. Healthy gums and tongue should be pale pink, so if they turn brighter pink, white, or gray, this merits a visit to your veterinarian.

Your Dog’s Oral Health

It is vital to stay on top of your dog’s oral health! You should brush your dog’s teeth three times a week at a minimum, but more often would be best. This will help keep your dog’s mouth healthy, and you’ll be able to pick up on any dental problems before they become serious issues.

male veterinarian checking up dog in vet clinic
Image Credit: SeventyFour, Shutterstock

Dogster divider_v2_NEW_MAY_24_

Conclusion

For the most part, a dog’s tongue hanging out of their mouth is nothing to worry about. In Internet speak, sometimes it’s just a blep (the tip of the tongue sticking out briefly), a mlem (the tip of the tongue sticking out to lick something but without the rest of the mouth opening, or a derp (when the dog seems to forget to put their tongue back into their mouth).

But if your dog’s tongue is sticking out for no discernible reason and your pup is also acting out of character, see your vet. Your dog’s oral health is of the utmost importance, and staying on top of it can help keep your pet happy and healthy.

See Also: 


Featured Image Credit: Mary Swift, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* 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 Dogster 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

The Spice Cabinet Dangers Most Dog Owners Don’t Think About

Most people know chocolate is off-limits for dogs. Fewer realize that some of the most common herbs and spices sitting in a kitchen...

A Major Breakthrough in Canine Anxiety Care: FDA Approves First Dual-Purpose Medication

Why This FDA Approval Is Such Important News For years, veterinarians and pet parents have struggled with a frustrating reality in canine behavioral...

Ask Dr. Paola- Help! Can Shock Collars Cause Seizures? (June 1, 2026)

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

Behind Most “Bad” Dog Behavior Is a Pretty Simple Problem (and Solution)

Dogs are supposed to be easygoing companions, and many seem to live up to it: sleeping on the couch for hours, watching the...

More related

Should You Wipe Your Dog’s Bum? Vet-Approved Considerations

You need to wipe a baby’s bum, but do you need to wipe your dog’s bum? It’s a good idea to keep an...

Bull Boxer (Bulldog & Boxer Mix): Info, Pictures, Facts, Care & More

If you’ve been looking for a dog that is loving, loyal, affectionate as they can be and intelligent to boot, then the Bull...

My Puppy Is Wobbly & Off Balance, Should I Be Worried? Our Vet Explains

When your puppy starts moving suddenly as if drunk, they might be experiencing ataxia or uncoordinated/wobbly walking. Vestibular ataxia makes a dog appear...

6 Quick Fixes When You’re Out of Dog Shampoo

You’re staring at a muddy pup… and an empty bottle of dog shampoo. Now what? Take a breath, and don’t panic! Your bathroom...

Keep reading

Can Dogs Eat Chicken Gizzards? Vet-Verified Facts & FAQ

Dogs can eat chicken, but can dogs eat chicken gizzards? Yes, you can feed your dog chicken gizzards! Of course, as with any food, there are potential risks to feeding your dog chicken gizzards. However, these risks can be largely...

Can Dogs Eat Chicken Gizzards

7 Best Dog Foods for Pitbulls to Gain Muscle in 2026 – Reviews & Top Picks

As pet owners, we all want our companions to thrive and give them the best we can give them when it comes to their nutrition. If you own a Pitbull, you understand that public perception has missed the mark, and...

pitbull eating

Can Dogs Eat Hamburgers? Vet-Reviewed Risks & FAQ

Are you barbecuing and wondering if you can feed your dog a hamburger? Or did they eat one, and you’re worried about their safety? The good news is that most hamburger components are completely safe for dogs, minus a few...

Can Dogs Eat Hamburgers

Can Dogs Eat Apricots? Vet-Verified Nutrition Facts & Precautions

Dogs are facultative carnivores, meaning that like omnivores, they can eat some plant matter as well as meat. Many like eating sweet foods and can be found eating windfall fruit. If your dog has a sweet tooth, consider feeding them...

fresh apricots

Benefits of Goat’s Milk for Dogs: 5 Incredible Health Perks

Every proud dog owner knows the key to a healthy and happy pup is a balanced and nutritious diet. One lesser-known but great dietary option for your furry friend is goat’s milk. Goat’s milk is incredibly nutritious for dogs and...

Goat's milk

Can Dogs Eat Chickpeas? Vet-Verified Nutrition Facts & FAQ

Chickpeas have a pleasant, nutty taste that lends itself well to many dip, salad, and curry recipes. They can provide many nutritional benefits for humans, but can you share this legume with your dog? Offering chickpeas in their plain form...

Can Dogs Eat Chickpeas

Can Dogs Eat Pudding? Vet-Reviewed Facts & FAQ

Imagine this: You’re feeling nostalgic for the school lunches you ate as a kid. You’re halfway through your peanut butter and jelly sandwich when you spot a fresh cup of pudding. As you pull back the lid, your hands slip,...

Can Dogs Eat_pudding

Nutro Dog Food Review 2026: Pros, Cons & Expert’s Opinion

Review Summary Finding high-quality, tasty, and affordable meals for our dogs is something we’re all searching for in dog food, and Nutro dog food is a great option. It provides a premium formula that won’t break your budget. The brand...

Dogster_Nutro Dog Food Review

Love Dogs? So Do We! Join the Dogster 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 Dogster Email Newsletter