Why Is My Dog Always Panting? Mostly At Night Or While Sleeping

Why Is My Dog Always Panting? Mostly At Night Or While Sleeping

Your dog is snoozing peacefully at night, but suddenly you hear it panting heavily. This is what most pet owners are worried about. This article will give you detailed guidance on what to do if your dog is panting heavily at night and how to distinguish normal panting from dangerous panting.

Compared to humans, dogs have very few sweat glands, which is why they always sweat more to keep themselves cool in warmer environments. It’s a biological process in which dogs often open their mouth and breathe heavily, which indicates their body temperature, and it’s a totally normal process. Medically, this condition is thermoregulatory panting.

This condition worsens at night because the ambient temperature is cooler, which logically should not be happening. If the temperature is normal and the dog is still panting, then this is the first sign to worry about.

This is concerning when painting at night in cooler temperatures, followed by pacing, whining, or an inability to settle. This is usually different from normal; it is louder and raspier.

While resting, 15 to 35 breaths per minute is considered normal; however, any value above 40 breaths per minute could be dangerous and concerning. In this article, I will explain when to be concerned and when it is normal, and provide a step-by-step guide on what you can do if the situation gets worse.

Research Data & Statistics

Cushing’s disease (hyperadrenocorticism) affects 0.2% of the dog population, most commonly after age 6, and is the most common cause of heavy breathing in senior dogs. However, canine anxiety disorder affects 20 to 25% of the dog population, especially domestic dogs, and heavy breathing accompanied by panting is the sign of dog anxiety.

The other cause is pain-induced panting, which is easy to miss because most dogs mask it during the daytime and are distracted by other activities; however, at night, it is more apparent. This is based on clinical data from 2024 to 2025 reported by the most qualified veterinarians.

Key facts,

  • 40% of the dogs have to face anxiety-driven panting.
  • 1 in 3 senior dogs shows canine cognitive dysfunction that heavily affects their breathing pattern.
  • Respiratory distress is the #1 reason why dog owners visit a veterinarian at night.

Causes Of Dog Panting At Night

The following are the causes of dog panting at night. I have mentioned the exact causes of their symptoms, which are emergencies and require seeing a doctor as soon as possible, along with the normal causes that should be monitored; there is no need to go to an emergency department.

01

Heatstroke

Dogs are at serious risk once temperatures exceed 106°F (41°C). Heavy panting is the body’s emergency cooling response. This can be fatal within minutes if not addressed.
⚠ EMERGENCY
02

Heart Disease

A failing heart cannot pump oxygenated blood efficiently, causing the dog to pant to compensate. Heavy panting after minimal activity (even a short walk) is a telltale sign.
⚠ EMERGENCY
03

Respiratory Disease

Conditions affecting the lungs, airways, or trachea restrict oxygen delivery. Watch for blue, grey, or purple gums — these indicate oxygen deprivation requiring immediate care.
⚠ EMERGENCY
04

Cushing’s Disease

Excess cortisol in the bloodstream causes chronic panting, especially at night. Accompanied by increased thirst/urination, pot-belly, and hair loss. Common in senior dogs.
⚡ SEE VET SOON
05

Pain or Discomfort

Arthritis, dental pain, back injuries, or post-surgical pain all worsen at night when distractions fade. A dog in pain will often pace, pant, and be unable to settle into a comfortable position.
⚡ SEE VET SOON
06

Canine Cognitive Dysfunction

“Dog dementia” disrupts normal sleep-wake cycles. Affected dogs become confused, disoriented (especially in the dark), and may pace and pant throughout the night.
⚡ SEE VET SOON
07

Anxiety & Stress

Separation anxiety, noise phobias (thunderstorms, fireworks), new environments, or major household changes trigger the stress response — which includes panting, even at night.
💬 MONITOR
08

Environmental Temperature

A bedroom that retains heat, a thick dog bed, or an owner’s body heat can make a dog too warm at night. Puppies and senior dogs are especially sensitive to temperature fluctuations.
💬 MONITOR
09

Medication Side Effects

Prednisone and other corticosteroids are notorious for causing panting as a side effect. Always review new medications with your vet if panting begins shortly after starting treatment.
💬 MONITOR
10

Dreaming (REM Sleep)

Dogs experience REM sleep cycles just like humans. Brief panting, twitching, or vocalizing during sleep is usually just your dog chasing squirrels in dreamland — and is entirely harmless.
✅ NORMAL

Breeds At Most Risk

Some dog breeds are at the highest risk of heavy panting at night. This is due to an anatomical or genetic predisposition that causes them to breathe heavily, usually at night.

Breed Category Example Breeds Primary Risk Factor
Brachycephalic
(Flat-faced)
Bulldogs, Pugs, Boston Terriers, Shih Tzu, Boxers Narrow airways → chronic breathing difficulty
Giant Breeds Great Danes, Saint Bernards, Newfoundlands Higher risk of heart disease & joint problems
Double-coated
Breeds
Huskies, Malamutes, Chow Chows, Samoyeds Overheating, especially indoors at night
Prone to Cushing’s
Disease
Poodles, Dachshunds, Beagles, Labrador Retrievers Genetic predisposition to hormonal imbalances
Anxiety-prone Border Collies, German Shepherds, Jack Russell Terriers High-strung temperament; noise sensitivity

What You Can Do At Home

Once the veterinarian has ruled out the main cause of heavy breathing, there are a few things that you can do to comfort your dog at nighttime. This heavily depends upon the cause of heavy breathing or panting. The following is a brief on how to comfort your dog.

Temperature-Related Panting

  • Place your dog in the proper cool room.
  • Arrange a fan or an air-conditioner directed toward your dog, not directly, but at the sleeping place.
  • Don’t exercise your dog about 2 hours before bedtime.

Anxiety-Related Panting

  • Make a consistent bedtime routine.
  • Provide a “den” where it feels safe.
  • Use a calming supplement or anti-anxiety medication, as recommended by your vet.

Pain-Related Panting

  • Use memory foam to lower pressure on joints.
  • Follow a pain management plan prescribed by your vet.
  • Maintain a healthy weight with a proper diet plan with your vet.

Conclusion

Before panicking, reach out to your mat. It’s important that you find the exact cause yourself using the signs and symptoms I described above. Reading this article carefully can improve your pet’s lifespan and help you avoid emergencies.

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