Why Is My Dog Breathing Heavy? Should You Be Worried?

Is your dog breathing heavy while sleeping or resting? Learn the causes, symptoms, and treatments for heavy breathing in dogs, and when it’s time to see the vet.

Seeing your dog breathe heavily—especially while sleeping or resting—can be alarming. Whether it’s loud nose breathing, rapid chest movement, or unusual gasping, it’s natural to worry. Heavy breathing may be normal at times, but in certain cases, it’s a red flag for a health issue.

So, our team of veterinary-trained experts breaks down why your dog might be breathing heavy, when it’s a sign of danger, and how to help your furry friend breathe easy again.

What Is Considered Normal Breathing in Dogs?

Age / State	Breaths Per Minute (Resting)
Healthy Adult Dog	15–35
Puppies	15–40
Over 40 Breaths/Minute	Abnormal – Vet Check Advised

Tip: To count your dog’s breaths, watch their chest rise and fall for 30 seconds, then multiply that number by two.

🔍 Why Is My Dog Breathing Heavy?

Heavy breathing (also called tachypnea) is a symptom, not a diagnosis. It can be caused by heat, anxiety, breed type, or more serious problems like heart failure or respiratory disease. Below are detailed reasons grouped by scenario:

💤 Why Is My Dog Breathing Heavy While Sleeping?

• Dreaming (REM sleep) – Especially in puppies; normal.
• Pain or illness – Watch for restlessness, whimpering.
• Heart or lung issues – If breathing seems loud or labored.

😴 Why Is My Dog Breathing Heavy While Resting?

• Anxiety or stress
• Heat exhaustion or mild overheating
• Underlying infections (e.g., pneumonia)
• Pain from injury or arthritis

🐶 Why Is My Dog Breathing Loud Through His Nose?

• Breed traits – Brachycephalic dogs like Pugs, Boxers, and Bulldogs.
• Allergies – Swollen nasal passages can restrict airflow.
• Nasal polyps or infection

🐕 Why Is My Dog Breathing Heavy and Fast?

• Heatstroke – Can be fatal; needs immediate vet care.
• Anemia – Reduced oxygen-carrying capacity causes heavy breathing.
• Pain, stress, or poisoning – Often includes lethargy and drooling.

🤒 Dog Breathing Fast But Not Panting?

This may signal:

• Heart disease
• Fluid in lungs
• Poison ingestion
• Collapsed trachea – Common in small breeds

😫 Why Is My Dog Breathing Heavy and Lethargic?

This is often a veterinary emergency. Possible causes include:

• Severe dehydration
• Toxic ingestion
• Internal bleeding or trauma
• Advanced infection or fever

⚠️ Signs Your Dog May Be in Respiratory Distress

Call your vet immediately if your dog shows:

• 💨 Rapid breathing > 40 breaths/min at rest
• 🟦 Blue or pale gums
• 😫 Heavy breathing with open mouth while resting
• 💧 Excessive drooling + labored breathing
• 🐾 Stomach moving with each breath
• 💤 Lethargy or collapse

🐶 How to Help a Dog That’s Breathing Heavy

Immediate Steps at Home:

• 🧊 Cool them down – Use wet towels and fans if it’s heat-related
• 🌬️ Keep calm – Stress worsens breathing
• 🚫 Avoid exertion – Let your dog rest in a quiet area

Veterinary Treatments:

Cause	Treatment
Heatstroke	Cooling, IV fluids, oxygen therapy
Respiratory infection	Antibiotics, steroids
Heart failure	Diuretics, heart meds, oxygen therapy
Anxiety	Behavior training, anti-anxiety meds
Poisoning	Detox, activated charcoal, IV support

🧠 How to Tell if a Dog Has Trouble Breathing

Look for:

• Constant open-mouth breathing at rest
• Struggling to inhale or exhale
• Flared nostrils
• Noisy breathing (wheezing, snorting, or gasping)
• Avoiding activity, not wanting to eat

💊 What Can I Give My Dog for Heavy Breathing?

Important: Never give your dog human medications such as aspirin or antihistamines unless your vet specifically tells you to.

Your vet may prescribe:

• Corticosteroids (for inflammation)
• Bronchodilators (for airway relief)
• Sedatives (if anxiety is the root cause)

❓ FAQs

Should I be worried if my dog is breathing heavy?

Yes, if it’s not related to heat or exercise, and especially if it occurs at rest or sleep, consult your vet.

How do I calm a dog that’s breathing heavy?

Move them to a quiet, cool area, reduce stimulation, and provide fresh water. Don’t force activity.

What does abnormal breathing sound like in dogs?

Wheezing, whistling, snorting, or loud raspy breathing may suggest airway blockage or infection.

Can anxiety cause heavy breathing in dogs?

When dogs feel stressed or anxious—like during separation—they might start panting or breathing faster. If this keeps happening, working with a behaviorist can really help calm them down.

✅ Final Thoughts: Trust Your Instincts

While panting is often normal, heavy breathing at rest, especially with other symptoms, is not. It’s always better to err on the side of caution and have your dog evaluated.