Why Does My Dog Sleep With His Tongue Out? (Vet-Backed Reasons)

Just imagine you are watching your dog sleeping peacefully on the couch. His paws are twitching, his breathing is steady, and there it is, that little pink tongue slipping out between his lips like a sleepy smile.

It is actually adorable, no doubt. But it also gets you thinking: why does my dog sleep with his tongue out? This quirky behavior is actually more common than you might think.

While it can be just another “dog thing,” sometimes it hints at underlying factors, both harmless and worth checking. So, walk with me now as I answer this mind-buzzing question, as well as explain the reasons why they happen.

 

Is It Normal for Dogs to Sleep With Their Tongues Out?

Yes, it is often normal. Many healthy dogs let their tongues hang out during deep sleep, especially in certain positions or after a tiring play session.

It usually happens during the REM (rapid eye movement) stage of sleep, when dogs are most relaxed. Their muscles go limp, their jaws loosen, and then their tongue slips out.

 

Read also: Can Dogs Eat Papaya Seeds? The Hidden Dangers Every Pet Owner Should Know

 

Why Does My Dog Sleep With His Tongue Out?

Below are possible reasons why your dog may sleep with his tongue out:

1. Deep Relaxation or REM Sleep

During REM sleep, your dog’s entire body is in a state of total relaxation. Their muscles, including those that control the tongue, lose tension.

It is kind of like when a person snores or drools in their sleep. But there is no need to panic, as this is a sign your pup is getting good rest.

2. Breed Traits and Skull Structure

Some breeds are more likely to nap with their tongues out because of the shape of their heads and mouths.

Brachycephalic breeds (those with flat faces) like Bulldogs, Pugs, and Shih Tzus often do not have enough space in their mouths to keep their tongues fully in.

3. Missing Teeth or Dental Issues

If your dog is missing a few teeth, especially the front ones, it may be harder for them to keep their tongue in. This is particularly common in older dogs or rescue pups who have had dental extractions.

4. Overheating or Temperature Regulation

Dogs do not sweat the way humans do; instead, they use their tongues to regulate body heat.

If your dog has been active or it is a warm day, they may leave their tongue out even while sleeping to stay cool.

5. Hanging Tongue Syndrome

Some dogs have a condition known as Hanging Tongue Syndrome, where their tongue hangs out constantly, including during sleep.

This usually results from nerve damage, genetics, or severe dental disease. While not always serious, it should be monitored by a vet.

6. Medication or Anesthesia Recovery

If your dog recently had surgery or is on certain medications, their tongue may slip out during rest. Anesthesia can relax their muscles beyond normal levels for hours or days afterward.

7. Age-Related Changes

Senior dogs might be more prone to this due to weakening jaw muscles or age-related neurological changes. It is generally harmless, but if accompanied by other changes in behavior, get a vet to check.

 

When Should I Worry About My Dog Sleeping with His Tongue Out?

Most of the time, a tongue hanging out during sleep is nothing to worry about. But here is when you should pay closer attention:

• Your dog suddenly starts doing it out of nowhere
• The tongue appears swollen, dry, or discolored
• Excessive drooling or trouble eating
• Bad breath or signs of oral discomfort

If you notice any of these symptoms, it is wise to consult your veterinarian. Better safe than sorry, right?

 

How Can I Help My Dog Sleep More Comfortably?

If the tongue-out sleep does not bother your dog, there is usually no need to intervene. But here are a few things you can do to support healthy, comfortable sleep:

• Provide a soft, supportive bed
• Ensure your dog’s sleeping area is cool and well-ventilated
• Brush their teeth regularly and schedule dental checkups
• Keep your vet informed of any behavioral changes

 

Why Does My Dog Sleep With His Tongue Out? (FAQs)

Is it Bad if My Dog Always Sleeps with his Tongue Out?

Not necessarily. If it has always been part of their sleep pattern and they show no other health issues, it is likely just normal behavior.

Can a Dog Choke on its Tongue while Sleeping?

No. Dogs have a different throat structure from humans and cannot choke on their tongue in the same way. Their airways remain open during sleep.

Should I Push My Dog’s Tongue Back in?

There is no need to. Forcing the tongue back in can cause discomfort or even harm, especially if your dog is startled awake.

Does this Behavior Mean My Dog is too Hot?

It might. Check for other signs of overheating like panting, restlessness, or warm ears. Make sure their sleeping spot is cool.

Is this More Common in Older Dogs?

Yes, age can contribute to this behavior, especially if they have lost teeth or developed weaker jaw muscles.

 

Read also: How To Introduce A New Cat To Your Dog: The Process

 

Conclusion

That cute tongue slipping out during nap time is often nothing more than a sign that your dog is fully relaxed and living its best life.

While it can sometimes point to dental issues, breed traits, or age-related changes, in most cases, it is completely harmless.

Still, as a loving pet owner, it is smart to stay observant. If anything looks off or unusual, your vet is always the best guide. Thank you so much for reading!

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