Can Dogs Have Nightmares?

Angela Vuckovic
by Angela Vuckovic
Iryna Kalamurza/Shutterstock

If you’ve ever watched your dog sleep, you might have noticed them twitching, whimpering, or even paddling their legs as if they were running. It’s easy to wonder - are they dreaming? And if so, could they be having nightmares?


The idea of dogs experiencing nightmares is fascinating, and while we can’t ask them directly, there’s plenty of evidence to suggest that they do, in fact, dream just like we do. But what exactly happens when a dog has a bad dream, and should you be concerned? Let’s take a closer look.


Do Dogs Dream?


Scientists believe that dogs, like humans, go through different sleep cycles, including REM (rapid eye movement) sleep. This is the stage of sleep when most dreaming occurs. Research on brain activity in sleeping dogs has shown that their sleep patterns are strikingly similar to ours, which suggests that they likely dream as well.


In fact, studies on rats have demonstrated that these small animals replay activities from their waking hours in their dreams. Since dogs have even more complex brains than rats, it’s highly likely that they also relive experiences in their sleep - both good and bad.


What Do Dogs Dream About?


Though we can’t say for certain, experts believe dogs dream about their daily experiences. Your dog might dream about chasing a ball, going for a walk, or interacting with people and other animals. A hunting breed might dream of tracking prey, while a herding dog could be rounding up imaginary sheep in its sleep.


Because dogs process emotions much like humans do, it’s also possible that they dream about stressful or frightening experiences. If your pup had a rough day at the vet or encountered an aggressive dog at the park, those moments might play out in their dreams.


Can Dogs Have Nightmares?


Yes, dogs can have nightmares. Just as happy moments can appear in their dreams, so can fears and anxieties. If you’ve ever seen your dog whimper, growl, or suddenly jolt awake from sleep, it’s possible they were having a bad dream.


Common triggers for nightmares in dogs might include past trauma (especially in rescue dogs), loud noises like fireworks or thunderstorms, or stressful situations they’ve recently experienced. A dog that has had negative interactions with other animals or humans may also relive those moments in their sleep.


Should You Wake a Dog from a Nightmare?


It’s tempting to wake up a dog that seems distressed in their sleep, but it’s usually best to let them wake up on their own. Suddenly waking a dog from a deep sleep, especially during a nightmare, can startle them, causing them to react instinctively by snapping or growling.


If your dog frequently has nightmares and appears very distressed, you can try gently calling their name from a distance to wake them gradually. Avoid touching them abruptly, as this can be disorienting.


How to Help a Dog That Has Frequent Nightmares


If your dog seems to have bad dreams often, there are a few things you can do to help:

  • Create a Calm Sleeping Environment: Make sure your dog has a comfortable, quiet place to sleep where they feel safe. A cozy bed in a familiar spot can provide reassurance.
  • Stick to a Routine: Dogs thrive on routine, and a consistent daily schedule can help reduce anxiety and stress, leading to more peaceful sleep.
  • Use Calming Aids: Some dogs benefit from anxiety-reducing tools like pheromone diffusers, calming chews or supplements.
  • Provide Plenty of Exercise: A well-exercised dog is more likely to have deep, restful sleep. Regular physical and mental stimulation can help reduce stress and lower the chances of nightmares.
  • Address Any Underlying Anxiety: If your dog seems particularly anxious or fearful during the day, working on their overall stress levels may help improve their sleep. Training, desensitization techniques, or even consulting a veterinarian for advice on anxiety management can be beneficial.

When to See a Vet


Occasional nightmares are nothing to worry about, but if your dog frequently wakes up distressed, struggles to sleep, or shows signs of anxiety during the day, it may be worth discussing with a vet. In rare cases, sleep disturbances could be linked to medical conditions such as seizures or cognitive dysfunction in older dogs.

Helping Your Dog Sleep Better


Just like humans, dogs can experience dreams - both pleasant and unpleasant. While the idea of a beloved pet having a nightmare can be upsetting, remember that occasional bad dreams are a normal part of sleep. Providing a secure, loving environment and minimizing stress in their daily life can help ensure they rest peacefully. And if you ever catch your pup twitching and softly barking in their sleep, just know that they’re likely off on another grand adventure - hopefully a happy one.


Angela Vuckovic
Angela Vuckovic

A proud mama to seven dogs and ten cats, Angela spends her days writing for her fellow pet parents and pampering her furballs, all of whom are rescues. When she's not gushing over her adorable cats or playing with her dogs, she can be found curled up with a good fantasy book.

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