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Dog Coughing: Types, Causes, and When It's Serious

Quick Answer: Watch and Assess

An occasional cough in a dog with no other symptoms is usually not urgent. A persistent, frequent, or productive cough -- especially with any breathing difficulty -- needs veterinary assessment.

Not sure how serious this is?Use the Symptom Checker →

Dog coughs can sound alarming even when minor, and can sound mild even when serious. The type of cough, when it happens, and what accompanies it are your best diagnostic clues before seeing a vet.

Most Common Causes

Kennel cough (infectious tracheobronchitis) (common)

Harsh, honking cough that sounds like a goose. Usually mild, self-limiting in healthy adult dogs. Highly contagious. Vaccine-preventable.

Collapsing trachea (common)

Common in small breeds (Yorkies, Pomeranians, Chihuahuas). Triggered by excitement, pressure on the neck, or drinking. Honking cough, especially on collar pressure.

Heartworm disease (moderate)

Soft, persistent cough in an unprotected dog. Especially important in mosquito regions.

Heart disease (congestive heart failure) (moderate)

Moist or wet-sounding cough, worse at night or when lying down. Exercise intolerance, breathing difficulty.

Foreign body (moderate)

Sudden onset coughing, gagging, pawing at the mouth. Dog may have been playing with a stick or toy.

Pneumonia (rare)

Deep, moist cough with fever, lethargy, and reduced appetite. Bacterial or aspiration origin.

Wait, Act, or Emergency?

You Can Watch and Wait If:

  • Mild honking cough after being at a dog park or boarding (likely kennel cough)
  • Occasional cough with no other symptoms

Call or Visit Your Vet If:

  • Persistent cough lasting more than 1 week
  • Cough with nasal discharge, fever, or lethargy
  • Any cough in a dog not on heartworm prevention

Go to Emergency Vet Immediately If:

  • Coughing with blue or grey gums
  • Labored breathing or open-mouth breathing in a dog that doesn't normally pant
  • Coughing up blood
  • Sudden, severe coughing/choking that suggests a foreign body
Still not sure what to do?

Our interactive checker walks you through symptoms, severity, and duration -- and gives you a clear go/wait/monitor answer.

Open Symptom Checker

Frequently Asked Questions

What does kennel cough sound like?
Kennel cough is a loud, harsh, dry cough that is often described as a "goose honk." It can end in retching or producing a small amount of white foam. The dog otherwise acts relatively normal.
Does kennel cough need antibiotics?
Most kennel cough in healthy adult dogs is viral and resolves without antibiotics in 1-2 weeks. Your vet may prescribe a cough suppressant for comfort. Antibiotics are used for secondary bacterial infections or at-risk dogs.
How do I know if my dog's cough is heart-related?
Heart-related coughs tend to be moist-sounding, worsen at night or when the dog lies down, and are accompanied by exercise intolerance and sometimes weight loss. A vet can evaluate with a stethoscope and chest X-ray.

Is Your Dog an American Bulldog?

American Bulldogs have breed-specific health vulnerabilities. ABRA-registered dogs from health-tested lines have better documented health histories.

Search American Bulldog PedigreesABRA Registry