Should I Be Worried If My Dog Cries in His Sleep?

Why Do Dogs Cry in Their Sleep?

Dogs do dream, and sleep-related noises like whimpering, barking, or twitching are common signs. These behaviors are often linked to REM (Rapid Eye Movement) sleep, a phase where brain activity increases and dreams occur. During this time, dogs may move their legs, wag their tails, or make soft noises—especially if they’re dreaming about running, playing, or interacting with their owners.

Some experts suggest that dogs likely dream about things that matter to them during the day, such as their favorite people, meals, toys, or favorite parks. Since dogs are highly focused on their owners, it’s reasonable to assume they dream about them frequently. These dreams may be visual and less logical than human dreams, but they reflect daily experiences.

Is Crying During Sleep Always a Dream?

Not necessarily. While some sleep sounds are tied to dreaming, others may result from simple muscle activity during sleep. One expert noted that much of a dog’s movement during sleep—like twitching or whimpering—may not be linked to dreams at all. Instead, it could be due to sudden activation in the motor areas of the brain, with little or no dream content.

Similarly, sleep talking in humans mostly happens during non-REM sleep and isn’t tied to dreams. Since similar studies haven’t been done on dogs, we can’t say for sure whether all crying is dream-related. However, the fact that dogs respond to sounds during both active and passive sleep phases suggests their brain activity during sleep is complex and not always tied to conscious dreaming.

Puppies and Sleep Crying: A Different Story

For puppies, crying in sleep may have a different cause. New puppies often cry at night due to fear or separation anxiety. They may feel vulnerable when left alone, especially in a new environment. This instinct comes from their wild ancestors, where crying helped signal distress and attract caregivers.

Puppies may cry loudly to say, “Help, I’ve been abandoned—rescue me now.” This is an automatic, survival-based response. While it’s normal in the first few weeks, persistent crying can lead to sleep deprivation for both puppy and owner. Providing a safe, den-like space and gradually building confidence can help reduce nighttime distress.

When to Be Concerned About Sleep Crying

While most sleep crying is normal, certain signs may indicate a problem. If your dog cries intensely, paces, growls, or has violent movements during sleep, it could be a sign of stress, pain, or a sleep disorder. One study noted that a dog with no active sleep and many sleep-wake cycles showed signs of stress, suggesting disrupted sleep patterns may reflect emotional or physical issues.

Additionally, if crying is frequent, occurs only at certain times, or is accompanied by other symptoms like restlessness, loss of appetite, or changes in behavior, it’s worth consulting a veterinarian. These could point to underlying health problems or anxiety that need attention.

Understanding Your Dog’s Sleep Patterns

Dogs have more sleep-wake cycles than humans—on average, about 23 cycles per night, each lasting around 21 minutes. They typically sleep for 16 minutes, then wake for 5. Dogs in fenced yards tend to sleep longer than those free to roam. This frequent cycling means dogs may enter and exit REM sleep multiple times, increasing the chance of dream-related behaviors.

Even though we can’t ask dogs what they dream about, we can observe their behavior. Gentle movements, soft whimpers, or tail wags during sleep are usually signs of normal, healthy dreaming. These behaviors are especially common in dogs that are emotionally bonded to their owners.