Dog Constantly Hacking and Coughing (Causes and What To Do)

Why Is My Dog Coughing Like Something Is Stuck in His Throat?

When a dog coughs as if something is stuck in the throat, it’s usually due to irritation or narrowing of the upper airway rather than a true blockage. Common causes include kennel cough, collapsing trachea (especially in small or senior dogs), throat or tonsil inflammation, acid reflux, or post-nasal drip from allergies or infection.

Less commonly, a foreign object, throat mass, or dental disease can trigger persistent gagging or retching sounds.

If the coughing is sudden, intense, or accompanied by pawing at the mouth, drooling, or distress, urgent veterinary care is needed to rule out an obstruction.

Dog Constantly Hacking and Coughing: Is It Kennel Cough?

Kennel cough is a frequent cause of hacking coughs, especially in dogs recently exposed to other dogs at kennels, grooming facilities, parks, or daycare.

It typically produces a harsh, dry, “goose-honk” cough and may be followed by gagging or retching. Most dogs with kennel cough remain alert and active, though mild nasal discharge or sneezing may occur.

However, not all hacking coughs are kennel cough—particularly in senior dogs or dogs with no recent exposure to other dogs. If the cough lasts longer than 7–10 days, worsens, or is accompanied by lethargy, fever, or breathing trouble, a veterinarian should rule out pneumonia, heart disease, or chronic airway disorders.

Dog Constantly Hacking and Coughing: Common Causes 

Kennel Cough

Kennel cough is one of the most common reasons for constant hacking in dogs. It’s a contagious respiratory infection that spreads quickly in places where dogs gather, such as kennels, dog parks, or grooming salons.

The hallmark sign is a persistent, honking cough that often sounds like your dog is trying to clear something stuck in their throat.

While it may sound alarming, mild cases often resolve on their own with rest and supportive care.

However, young puppies, senior dogs, or dogs with weak immune systems can develop complications like pneumonia, making veterinary attention important if symptoms don’t improve.

Read more: Dog Constantly Hacking and Gagging (Here’s Why)

Tracheal Collapse

Small breeds such as Chihuahuas, Pomeranians, and Yorkies are especially prone to tracheal collapse.

This condition occurs when the cartilage rings of the trachea weaken, causing the airway to flatten when the dog breathes or gets excited.

The result is a harsh, honking cough that may worsen with exercise, excitement, or pulling on the leash. It is often mistaken for choking.

Tracheal collapse is a chronic condition, and while it can be managed with medications, lifestyle changes, or sometimes surgery, it does require ongoing veterinary care.

Heart Disease

Coughing and hacking can also signal heart disease, especially in older dogs or breeds prone to cardiac conditions.

When the heart isn’t pumping effectively, fluid may back up into the lungs, leading to irritation and coughing.

Dogs with heart disease often show additional symptoms like lethargy, exercise intolerance, and in severe cases, difficulty breathing or fainting.

If your dog is constantly coughing and you suspect heart issues, prompt veterinary evaluation is essential.

Allergies or Irritants

Just like people, dogs can develop allergies to pollen, dust, mold, or even household cleaners. Constant exposure to these irritants can inflame the airways and trigger frequent coughing or hacking.

If the hacking seems seasonal, happens after cleaning, or appears when your dog is outside, allergies or environmental irritants could be the cause.

While not usually life-threatening, allergies can significantly affect your dog’s comfort and may require antihistamines, diet adjustments, or environmental management.

Foreign Object in the Throat

Sometimes, hacking is your dog’s way of trying to expel something stuck in their throat.

Small objects, food, grass, or even pieces of toys can cause sudden and persistent coughing.

Unlike other causes, this situation often comes on suddenly and may be accompanied by pawing at the mouth, gagging, or visible distress.

This can quickly become an emergency if the airway is blocked, so immediate veterinary help is required if you suspect your dog is choking.

Pneumonia or Other Infections

More serious respiratory infections, such as pneumonia, can also lead to persistent coughing and hacking.

These conditions often come with additional symptoms like fever, lethargy, nasal discharge, and loss of appetite.

Pneumonia requires prompt medical treatment, including antibiotics, supportive care, and in some cases hospitalization.

Left untreated, it can become life-threatening, so a dog that seems unwell along with constant coughing should always be evaluated quickly.

Old Dog Constantly Hacking and Coughing

When an older dog is constantly hacking and coughing, it often points to age-related conditions affecting the heart, lungs, or airways. Common causes include chronic bronchitis, collapsing trachea, heart disease, or lung tumors.

Senior dogs may also have weakened immune systems, making them more prone to respiratory infections.

A persistent cough in an older dog should never be dismissed as “normal aging,” especially if it worsens, becomes more frequent, or is accompanied by fatigue, breathing difficulty, or weight loss.

Because many serious conditions share similar symptoms, a veterinary exam with chest X-rays and possibly heart testing is usually needed to identify the cause and start appropriate treatment early.

Dog Constantly Hacking and Coughing at Night

A dog that is constantly hacking and coughing at night may be experiencing symptoms that worsen when lying down. This pattern is commonly associated with heart disease, fluid buildup in the lungs, or acid reflux.

At night, changes in body position can increase pressure on the airways or allow stomach acid to irritate the throat, triggering coughing fits. Environmental factors like dry air or allergens can also contribute.

Nighttime coughing is a red flag, especially if it disrupts sleep or is paired with restlessness or labored breathing. Veterinary evaluation is important, as untreated heart or airway conditions can progress quickly in older dogs.

My Dog Has a Dry Cough and Then Gags

A dry cough followed by gagging often indicates irritation of the throat or upper airway. This is commonly seen with kennel cough, collapsing trachea, or foreign material irritating the throat.

The gagging may look like your dog is trying to vomit, but little or nothing comes up. In some cases, acid reflux or post-nasal drip can also trigger this reaction.

Occasional coughing and gagging may be mild, but frequent episodes suggest an underlying airway or digestive issue.

If the cough persists, becomes painful, or is paired with breathing changes or appetite loss, veterinary assessment is important to prevent complications and ensure proper treatment.

What to Do If Your Dog Is Constantly Hacking and Coughing

If your dog is hacking and coughing frequently, start by observing the situation closely. Note when the coughing happens—whether it’s after exercise, at night, or after exposure to other dogs. This information will help your vet narrow down the cause.

At home, make sure your dog is comfortable in a calm environment with plenty of fresh water.

Avoid using collars that put pressure on the throat—opt for a harness instead. Keeping your home free of smoke, dust, and strong scents can also reduce airway irritation.

If kennel cough is suspected and your dog is otherwise bright and eating, you can monitor them for a few days while ensuring they rest and avoid contact with other dogs.

However, puppies, older dogs, or those with existing health problems should be seen sooner.

For mild allergy-related coughing, washing bedding frequently, using an air purifier, and limiting outdoor exposure during high-pollen seasons may help. Always consult your vet before giving any human medications, as many are unsafe for dogs.

When to Call or Visit Your Vet

Not all coughing is an emergency, but constant hacking should never be ignored. Call your vet right away if your dog is struggling to breathe, coughing up blood, or appears extremely lethargic.

If the coughing persists for more than a few days without improvement, veterinary evaluation is necessary to rule out more serious conditions like pneumonia, heart disease, or tracheal collapse.

You should also seek urgent care if your dog suddenly starts coughing after chewing on something, as this could mean a foreign object is lodged in the airway.

Remember, persistent coughing is the body’s way of signaling that something isn’t right. Early diagnosis and treatment often lead to better outcomes.

Read more: Dog Constantly Hacking (Explained)

Dog Hacking and Coughing: Treatment

Treatment depends on the underlying cause. For kennel cough, vets often recommend rest, isolation from other dogs, cough suppressants, and sometimes antibiotics if a bacterial infection is suspected.

Collapsing trachea is managed with weight control, harness use (instead of collars), cough suppressants, bronchodilators, and anti-inflammatory medications.

If acid reflux is the trigger, dietary changes and stomach-acid–reducing medications can help. Allergy-related coughing may improve with antihistamines or environmental control, while heart or lung disease requires targeted therapy after imaging and exams.

Any cough lasting more than a few days, worsening at night, or paired with breathing difficulty, lethargy, fever, or appetite loss should be evaluated by a veterinarian to prevent complications and ensure the right treatment.

Key Takeaway

A dog constantly hacking and coughing may be dealing with something as simple as kennel cough or as serious as heart disease or pneumonia.

While some mild cases resolve with rest and care, ongoing or severe coughing should always be checked by a veterinarian.

By observing your dog closely, keeping their environment safe, and knowing when to call your vet, you’ll be taking the best steps to protect your dog’s health and comfort.