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Why Do Dogs Twitch in Their Sleep?

You may have noticed sudden, brief twitching at some point while your dog was sleeping and wondered if they were dreaming or even expressing some type of discomfort.

These involuntary movements—where a dog is twitching in their sleep—only occur during dream states and usually don’t last long. Twitching can happen anywhere in your dog’s body but commonly occurs in the legs, tail, or head. It may be accompanied by small vocalizations.

So is twitching just a normal part of dreaming, or are there times when you should worry?

Why Do Dogs Twitch in Their Sleep?

Dogs sleep an average of 12-14 hours each day. While they sleep, a dog’s brain processes information and experiences from the day through dreams. Twitching is often related to active dream cycles in the brain.

According to research by psychologist Stanley Coren, an average-size dog will dream about every 20 minutes, and these dreams will last about a minute. Larger breeds have fewer dreams that last longer—about every 45 minutes for 4 minutes. The opposite is true for smaller breed dogs; they will dream about every 10 minutes for up to 30 seconds.

Dogs experience the same dream stages as humans, including non-rapid eye movement (NREM), short-wave sleep (SWS), and rapid eye movement (REM). During the REM state, a dog’s eyes move around behind their closed eyelids, and the large body muscles are turned off so the dream is not physically acted out.

The part of the brain that contains these off switches is called the pons, which is part of the brain stem. In younger dogs, the pons may still be developing, while in older dogs it may be weakening from age. This is why twitching while sleeping occurs most commonly in younger and older dogs and less often in adult dogs.

The amount of twitching depends on how much these off switches inhibit muscle movement. Puppies spend more time in dream sleep than adult dogs because they need to process more information.

Dogs that sleep in a curled position will keep their muscles tensed and are less relaxed, which may cause them to twitch less than a dog that sleeps in a stretched-out position. Any outside stimulation from loud noises such as thunder, fireworks, or strange voices may partially awaken a sleeping dog and result in twitching as well.

Should You Wake Your Dog Up If They Twitch in Their Sleep?

If your dog sleeps next to you, they may unintentionally disturb your sleep with their sudden body movements. However, it is often advised to not awaken a dog that is twitching in their sleep unless they are clearly in distress.

A nightmare or night terror could be the cause of these involuntary movements, and they may wake up frightened. Try to avoid touching them so they don’t bite or scratch you as a result of being startled.

Instead, gently call your dog’s name until they respond. Speak calmly and reassure them that they are safe and secure after they wake up. While they appear to be pretty active in their sleep, dreaming dogs may be slow to awaken.

When Should You Be Concerned About a Dog Twitching in Their Sleep?

You should be concerned when the twitching interferes with your dog’s sleep. They may be unable to fall sleep or constantly awakened during sleep.

Another cause for concern is when the twitching becomes a full-body tremor, causing the body to go rigid or lasting longer than a brief spasm. In this case, there may be another explanation for the twitching, such as:

  • Seizure or other neurologic condition

  • Infection with parasites, bacteria, or viruses

  • Malnutrition

  • Diabetes

  • Low blood sugar

  • Low body temperature

  • Kidney and liver issues

  • Certain heart conditions

  • Anxiety

  • Arthritis

  • Poison ingestion

Ingesting topical or environmental pesticides or toxic foods may also cause twitches or tremors in dogs. If you suspect that your dog has had exposure to a toxin or has any other underlying medical condition, then an immediate veterinary exam is necessary for diagnosis and appropriate treatment.

What’s the Difference Between Twitching and a Seizure When a Dog is Sleeping?

During normal sleep, a dog’s body will be flexible and relaxed, and they will be breathing normally, with their eyes partially or completely closed. They should awaken easily and respond to voices.

Normal twitching usually occurs when a dog is lying on their side, paddling their paws, and possibly making little noises. You may notice irregular breathing when your dog starts twitching.

Seizures usually occur while dogs are awake. To determine whether twitching during sleep is due to a seizure, look for the following signs:

  • A stiffening of the body

  • Labored breathing

  • Eyes wide open but not reacting

  • Loss of consciousness with no response to your voice

  • Loss of control of urine and bowel movements

  • Foaming at the mouth

  • Vomiting

Dogs may temporarily act confused, disoriented, or dazed, and they may drool or pant after the seizure activity has ended.

The Science Behind Canine Dreaming

Dreams are a fascinating aspect of both human and animal behavior. In dogs, dreaming is believed to be a crucial process for cognitive function and mental health. Research has shown that dogs experience REM sleep, the stage of sleep where dreaming occurs. During REM sleep, the brain is highly active, and this is when the most vivid dreams happen.

The Role of REM Sleep in Dogs

REM sleep is characterized by rapid eye movements, increased brain activity, and temporary muscle paralysis. This stage is essential for processing memories, learning, and overall brain health. Puppies and younger dogs spend more time in REM sleep because their brains are developing and they are constantly learning new things. This increased REM sleep is why puppies are more likely to twitch and move during sleep.

The Function of the Pons

The pons is a part of the brainstem that plays a crucial role in regulating sleep cycles and muscle movement. It acts as an "off switch" for the muscles during REM sleep, preventing dogs from physically acting out their dreams. In young puppies, the pons is still developing, which is why they may not have full control over their muscle movements during sleep, leading to more frequent twitching. In older dogs, the pons may weaken, resulting in similar twitching behavior.

Factors Influencing Sleep Twitching

Several factors can influence the frequency and intensity of sleep twitching in dogs. These include:

  1. Age: As mentioned, puppies and older dogs are more likely to twitch due to the developmental stage of the pons.

  2. Sleep Position: Dogs that sleep in a stretched-out position tend to twitch more because their muscles are more relaxed compared to dogs that sleep curled up.

  3. Daily Activity: Dogs that have had a physically active day may experience more intense dreaming and, consequently, more twitching.

  4. External Stimuli: Loud noises or environmental changes can partially awaken a sleeping dog, triggering muscle movements and twitching.

  5. Health Conditions: Underlying health issues such as neurological disorders, metabolic conditions, and exposure to toxins can also cause twitching.

Understanding Canine Nightmares

Just like humans, dogs can have nightmares. These can be triggered by stressful events or experiences. During a nightmare, a dog might exhibit more intense twitching, vocalizations, and rapid movements. If a dog wakes up from a nightmare, they may be disoriented or anxious. It's important to comfort them and create a safe environment to help them feel secure.

The Connection Between Sleep and Overall Health

Sleep is essential for a dog's overall health and well-being. Quality sleep helps with physical recovery, cognitive function, and emotional stability. Disruptions in sleep patterns, including excessive twitching, can be a sign of underlying health issues. Monitoring your dog's sleep behavior can provide valuable insights into their overall health.

The Role of Nutrition in Sleep Health

Proper nutrition plays a significant role in a dog's sleep health. A balanced diet ensures that your dog gets the necessary nutrients to support their bodily functions, including brain health. Nutrient deficiencies can lead to issues like muscle spasms, weakness, and abnormal sleep behaviors. Ensuring that your dog has a well-balanced diet can help minimize sleep disturbances.

The Importance of Regular Veterinary Check-Ups

Regular veterinary check-ups are crucial for maintaining your dog's health. If you notice any changes in your dog's sleep behavior, including increased twitching, it's important to consult with your veterinarian. They can perform a thorough examination to rule out any underlying health conditions and provide appropriate treatment if necessary.

Calming Techniques for Better Sleep

There are several techniques you can use to help your dog have a restful sleep:

  1. Establish a Routine: Consistent daily routines, including feeding times and exercise schedules, can help regulate your dog's sleep patterns.

  2. Create a Comfortable Sleep Environment: Ensure that your dog has a comfortable, quiet, and safe place to sleep. This can help reduce anxiety and promote better sleep.

  3. Use Calming Aids: Calming aids such as pheromone diffusers, calming collars, and music therapy can help reduce anxiety and promote relaxation.

  4. Provide Mental Stimulation: Mental stimulation through interactive toys, training, and enrichment activities can help tire your dog out and promote better sleep.

  5. Monitor Their Health: Regular monitoring of your dog's health, including their diet and physical activity, can help identify and address any issues that may affect their sleep.

When to Seek Veterinary Attention

If your dog exhibits any of the following symptoms along with twitching, it's important to seek veterinary attention:

  • Persistent twitching that disrupts sleep

  • Full-body tremors or seizures

  • Changes in behavior or mood

  • Loss of appetite or weight loss

  • Difficulty breathing or labored breathing

  • Signs of pain or discomfort

Your veterinarian can conduct a thorough examination and recommend appropriate tests to diagnose the underlying cause of these symptoms.


Understanding why dogs twitch in their sleep can help pet parents ensure their furry friends are healthy and comfortable. While occasional twitching is usually normal and related to dreaming, persistent or intense twitching could indicate an underlying health issue. By providing a balanced diet, maintaining a consistent routine, and seeking regular veterinary care, you can help your dog enjoy restful and healthy sleep.

For more information on pet health and behavior, you can visit

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