Why Does My Dog Wag Her Tail While Sleeping

For humans, dogs often act in amusing and unusual ways that are both enjoyable and perplexing. One of them is observing a sleeping or napping dog’s tail wag. But why does my dog wag her tail while sleeping? Is it a pleasant dream, or perhaps a horror, that they’re experiencing?

For pet parents to observe their dog’s tail wagging while it sleeps, especially during REM sleep. They may even bark or shuffle their feet as though they were running. It doesn’t matter if you’re taking care of mature Golden Retrievers, this sight may startle you at first.

Why Does My Dog Wag Her Tail While Sleeping

When a dog is sleeping and wag its tail, something is happening in the dog’s dream. It means to elicit a specific response from the dog. The type of dream circumstance or, more importantly, the emotion it has inspired, determines the reaction.

Do you remember when you embarrassed yourself by yelling something out in your sleep? Dogs had gone through comparable situations, but they barked. Like us, dogs usually act in ways that we do while awake during the REM cycle. One of them happened to be wagging their tail.

Dog’s Dreaming

Because they are dreaming, dogs wag their tails while they are asleep. According to popular belief, dogs dream similarly to people. Of course, it’s challenging to pinpoint the details of a dog’s dream. When people wake up, they can talk about their dreams, but you can’t ask a dog what they dreamed about.

REM sleep is when dreams happen. In essence, during sleep, brain circuits become active, paralyzing the body to prevent movement. When you run in your dreams, neither you nor your dog jump out of bed and go for a run.

This system is imperfect in both humans and dogs. Movements occasionally take place. Most likely, something that happened in your dog’s dream caused them to wag its tail while they are sleeping.

REM Sleep

REM sleep is the stage of a dog’s sleep cycle that is so deep. Both people and other animals go through REM sleep. Rapid eye movement, or REM, occurs during this stage of sleep. Dogs may wag their tails or make other uncontrollable motions when they are in REM.

Vivid Dream

Your dog is experiencing a very vivid dream on those closed eyelids when you notice them wagging their tail in sound sleep. Naturally, a dog wouldn’t simply be wagging its tail because it was dreaming. Their tail must be performing a midnight dance since something must be happening in the dream.

In our sleep, we could scream if we have a terrifying dream. We might laugh if our dreams are amusing. The type of dream your dog is having will determine the type of dreamlike activity they exhibit.

Tail Positioning And Direction

Your dog’s tail may be displaying a variety of emotions. Such as fear, worry, guilt, or unadulterated ecstasy, depending on its position, direction, and rate of swing. When a dog is wagging her tail and also displaying other behaviors that are indicative of stress or fear. It can be easy to mistake her for being friendly even when his body language says otherwise.


If a dog’s tail is wagging and she has her tail lowered and between his legs, she probably doesn’t feel safe. Depending on the situation from the body language, pricked ears, or tense stance, she may be fearful or nervous. A dog’s slow tail wag is typically not a sign of happiness.

Instead, he can be conveying submission or dread. He might also be regretting ruining your favorite pair of slippers. Try to reassure your dog and let her know she’s okay. Even if she does something wrong if you see a slow-moving tail. If your tone is one of anger, your dog will sense that.

No matter what it is—your favorite pair of shoes or the chewed-up couch cushions—she will respond in kind by wagging her tail. It’s vital to remember that dogs merely act instinctively when they chew on your priceless items.

The distinction between their toys and your needs, make clear to them. It’s ideal to avoid making your dog feel scared or anxious as a result of his bad conduct.

Curiosity And Attention

If your dog’s tail is standing up straight than usual, she’s probably paying attention. He may be waiting for you to toss the ball to him. He is vigilant and pays close attention as he plans his next move. Some dogs have a special talent for identifying objects or prey by pointing with their paws.

Similar to how you stand more upright when you are trying to listen intently or hear what someone is saying. Similar “pointer” dogs may also engage in these behaviors when they are sleeping. Particularly if they have been conditioned to do so while awake during the day.

Right vs. Left Tail Waging

It’s interesting to note that your dog’s tail movement may also indicate how she is feeling. Your dog is at ease and relaxed if you observe that her tail is wagging more to the right of his body. On either side, if her tail is more inclined to wag to the left.

It is more likely that she is feeling either on guard or worried. Pay close attention and attempt to figure out what your dog is trying to tell you. Because her tail is probably moving a little slower than if she is feeling thrilled.

Have A Seizure

In rare cases, a dog’s tail wagging while it’s dozing can signal a seizure. Because seizure movements might resemble sleep movements, this can be challenging to identify. During a seizure, your dog’s body may become rigid.

It’s easy to feel anxious and fearful when you observe seizures because they are so terrifying. Instead, maintain your composure because your dog could require help. If your dog is convulsing and is lying in an elevated position, attempt to hold the head with a soft towel.

When they are having a seizure, stay away from their mouths, and don’t stick your hand in there. That might make your dog bite you, or you might end up choking your dog. Stay close to reassure your dog if they become confused as you wait for the seizure to end.

Take your dog to the vet as soon as you can if this is your first seizure. To rule out potential conditions and identify the underlying cause, your veterinarian may perform a few tests. Your veterinarian can suggest anti-seizure drugs to treat your dog’s seizures in the future.


When my dog wags his tail while resting, what does that mean?

During REM sleep, twitching, wagging, leg kicks, and small barks or grunts are frequent. These actions show that your dog is sleeping soundly and deeply. Particularly puppies and older dogs have the propensity to move around more during sleep.

Do dogs make up sleep times?

Numerous dog owners claim that their mischievous canines can and do pretend to be asleep to either get out of something. Because they want to do something that they shouldn’t be doing. When they hear the word “bath,” some dogs will pretend to be asleep to escape.

Why must my dog rub against me as he sleeps?

Your dog regards you as their guardian since you are the leader of the pack. It makes sense that, for safety and protection, he or she would want to remain directly opposite the alpha. Canines will also sleep touching one another in a pack for warmth.

Is a tail wag a positive sign?

In 2007, scientists learned that a dog’s tail wag can also provide information about how it is feeling. A tail wagging to the right denotes happy feelings while a tail wagging to the left denotes unhappy feelings.

Does a dog ever dream of its owners?

Dogs are typically very bonded to their human owners. Your dog may be dreaming of your face, your scent, and how to please or anger you. Humans have the same interests in their dreams as they do during the day. But their dreams are more visually appealing and less rational.


Dogs are man’s best companions for a reason. They work hard to communicate with you through their movements and distinctive expressions while also trying to make you happy. Even though they have less sophisticated brains than humans do, they function very similarly.

The next time your dog is dozing off, pay special attention to the motions of her tail. You might even be able to deduce what he’s dreaming if you pay close attention.

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