Why Is My Dog Coughing? Causes, Concerns, and When to See a Vet

It’s always a little concerning when your dog starts coughing. Whether it’s a gentle hack or a persistent, harsh sound, coughing can mean many things—some benign, others more serious. If you're asking, "Why is my dog coughing?", you're not alone. Let’s dive into the most common causes, what to watch for, and when it’s time to visit the vet.

Is Coughing Normal for Dogs?

Occasional coughing isn’t necessarily a cause for alarm—just like humans, dogs may cough to clear their throat or if something irritates their airway. But frequent or intense coughing could be a symptom of an underlying health issue.

➡️ VCA Animal Hospitals explains how to recognize different types of canine coughs.

Common Reasons Dogs Cough

1. Kennel Cough (Canine Infectious Tracheobronchitis)

One of the most common causes of coughing in dogs, especially those recently boarded or around other dogs.

Symptoms: Dry, hacking cough (often sounds like a goose honk), gagging, sneezing.

➡️ AKC shares detailed info about kennel cough and prevention.

2. Collapsed Trachea

Toy breeds like Pomeranians and Chihuahuas are particularly susceptible. This condition causes the trachea (windpipe) to weaken and collapse, leading to chronic coughing.

Symptoms: Honking cough, especially when excited, pulling on the leash, or after eating/drinking.

3. Heart Disease

Heart issues, especially congestive heart failure, can lead to fluid buildup in the lungs, which causes coughing—often more pronounced at night or after exercise.

Symptoms: Coughing, fatigue, difficulty breathing, fainting.

➡️ Cornell University College of Veterinary Medicine explains canine heart disease.

4. Allergies or Irritants

Just like people, dogs can have allergic reactions to dust, pollen, smoke, or household chemicals, triggering coughing.

Symptoms: Sneezing, watery eyes, coughing, itchiness.

5. Foreign Object in Throat

A sudden onset of intense coughing might mean your dog has inhaled a small object, toy part, or food particle.

Symptoms: Gagging, pawing at the mouth, distress.

➡️ ASPCA Pet Poison Control Center offers help if you suspect your dog swallowed something dangerous.

6. Canine Influenza or Respiratory Infections

Flu and other upper respiratory infections in dogs can cause symptoms similar to the common cold—coughing included.

Symptoms: Coughing, runny nose, fever, lethargy.

➡️ CDC’s page on Canine Influenza Virus provides helpful insights for dog owners.

When to See a Vet

Here are signs that mean it’s time to seek professional help:

Coughing lasts more than a few days
Cough is wet, phlegmy, or includes blood
Difficulty breathing or wheezing
Loss of appetite or energy
Other pets are coughing too

It’s always better to err on the side of caution. Your veterinarian can perform a physical exam, X-rays, or blood tests to determine the cause and offer the right treatment.

➡️ Find an AAHA-accredited vet near you.

How to Help a Coughing Dog at Home

While you wait for a vet appointment or if your pup has mild irritation, these tips might offer relief:

Use a humidifier in dry weather
Avoid smoke, strong cleaning products, or allergens
Switch to a harness instead of a collar
Keep them hydrated and rested

➡️ The Humane Society offers more dog health care tips.

A dog’s cough can range from mild irritation to a sign of something serious. Paying attention to how often, how long, and what kind of cough your dog has is key to keeping them healthy and happy.

If your dog is coughing and you’re concerned, don’t wait—consult with your vet to get the answers (and peace of mind) you need.

Did you find this helpful? Share it with fellow dog parents or explore more canine health insights at Dogs Naturally Magazine.