Why Do Dogs Sometimes Sleep with Their Tongue Out? | Canine Sleep Habits

Muscle Relaxation and the Sleep State

One of the most frequent reasons for a dog’s tongue to hang out during sleep is simply muscle relaxation. Just like humans, dogs experience muscle relaxation as they enter deeper stages of sleep. This relaxation extends to the muscles in their jaw and tongue.

When these muscles relax, the tongue may naturally slip out of the mouth. It’s a passive process, and the dog isn’t actively sticking their tongue out; it’s merely resting in a relaxed position.

This is especially common in older dogs, as their muscle tone may naturally decrease with age. This makes it more difficult to keep the tongue fully retracted.

Breed Predispositions and Facial Structure

Certain dog breeds are more prone to sleeping with their tongues out due to their facial structure. Brachycephalic breeds, such as Bulldogs, Pugs, and Boxers, are particularly susceptible.

These breeds have shortened snouts and compressed facial features, which can make it difficult for them to comfortably keep their tongue entirely inside their mouth. The shape of their jaw and the positioning of their teeth can also contribute.

Even when awake, these breeds may frequently have their tongues partially visible. This tendency becomes even more pronounced during sleep when muscles are relaxed.

Dental Health and Missing Teeth

The state of a dog’s dental health can also play a role in whether they sleep with their tongue out. Dogs with missing teeth, particularly incisors (the small teeth at the front of the mouth), may have less support for their tongue.

The absence of these teeth can create extra space, allowing the tongue to slip forward more easily. Dental disease, leading to tooth loss, is a common issue in dogs, especially as they age.

If you notice a sudden increase in your dog sleeping with their tongue out, it’s worth checking their teeth for any signs of decay or missing teeth. Consult with your veterinarian for a thorough dental examination.

Medication and Side Effects

In some instances, certain medications can contribute to a dog sleeping with their tongue out. Some medications can cause muscle relaxation or drowsiness as a side effect.

These effects can extend to the muscles of the jaw and tongue, leading to the tongue protruding during sleep. If your dog has recently started a new medication and you notice this behavior, discuss it with your veterinarian.

They can assess whether the medication is a likely cause and explore alternative options if necessary. Never discontinue medication without consulting your vet.

Neurological Issues (Less Common)

Although less common, neurological issues can sometimes be the underlying cause of a dog sleeping with their tongue out. Conditions affecting the nerves controlling the muscles of the face, jaw, and tongue can lead to weakness or paralysis.

This can make it difficult for the dog to keep their tongue inside their mouth. Other signs of neurological problems may include facial drooping, difficulty swallowing, or incoordination.

If you suspect a neurological issue, it’s crucial to seek veterinary attention immediately. Early diagnosis and treatment can improve the outcome.

When to Consult a Veterinarian

While a dog sleeping with their tongue out is often harmless, there are situations where it warrants a visit to the veterinarian. If you notice any of the following, it’s best to seek professional advice:

• Sudden onset of the behavior, especially in a dog that has never done it before.
• Excessive drooling or difficulty swallowing.
• Changes in appetite or weight loss.
• Signs of dental disease, such as bleeding gums or bad breath.
• Other neurological symptoms, like facial drooping or incoordination.
• Any other concerning symptoms.

Your veterinarian can perform a thorough examination to determine the underlying cause and recommend appropriate treatment if necessary. Early intervention can often prevent more serious problems.