Why Does My Dog Keep Coughing?

A dog coughing occasionally is not always a reason to worry, but a dog that keeps coughing is telling you something. Coughing in dogs is a symptom, not a diagnosis, and it can point to everything from a minor irritation to a serious respiratory or cardiac condition. Below, we’ll help you understand the different types of dog coughs, what causes them, and when coughing in dogs requires veterinary attention, so you can act quickly and confidently when your pet is struggling.

 

 

Why Is My Dog Coughing?

Dog coughing happens when the body tries to clear the airways of irritants, mucus, foreign objects, or inflammation. The causes range widely in severity, from a brief response to inhaling dust to signs of a life-threatening condition. Identifying what type of cough your dog has, along with other symptoms, helps narrow down the underlying cause and guides the appropriate response.

At Advanced Pet Care of Clear Lake in Webster, TX, our veterinary team evaluates dog coughing regularly. When a dog keeps coughing, it is always worth investigating. A cough that seems minor can be the first sign of a condition that progresses quickly without treatment.

Common Causes of Coughing in Dogs

There are many reasons why a dog might cough, and the cause often corresponds to the character of the cough itself. Here are the most common causes our team sees.

Kennel Cough (Infectious Tracheobronchitis)

Kennel cough is one of the most common causes of coughing in dogs, particularly in dogs who have been around other dogs at boarding facilities, dog parks, groomers, or shelters. The hallmark of kennel cough is a harsh, honking cough that can sound alarming. Dogs with kennel cough often seem otherwise healthy and continue eating and acting normal despite the persistent cough. The condition is caused by a combination of bacterial and viral pathogens, most commonly Bordetella bronchiseptica.

Kennel cough is highly contagious between dogs. If your dog is coughing and has recently been in contact with other dogs, this should be on your radar. Advanced Pet Care of Clear Lake offers the Bordetella vaccine, which is one of the most important preventive measures against kennel cough for dogs with social exposure.

Canine Influenza

Canine influenza, or dog flu, is another infectious cause of coughing in dogs. Like kennel cough, it spreads easily between dogs. Dog flu coughing is typically accompanied by other symptoms including nasal discharge, fever, lethargy, and reduced appetite. Vaccination is available and recommended for dogs with regular social exposure.

Heartworm Disease

In the Houston area and along the Gulf Coast, heartworm disease is a serious and unfortunately common concern. Heartworms are transmitted by mosquitoes and can grow to live in a dog’s heart and lungs. A dog with heartworm disease often develops a persistent, soft cough, exercise intolerance, and fatigue. In advanced cases, the coughing can become severe. Heartworm disease is preventable with monthly prevention, but it is not treatable at home once contracted. Annual heartworm testing at Advanced Pet Care of Clear Lake is an important part of your dog’s preventive care.

Heart Disease

A dog with heart disease may develop a cough as the disease progresses. As the heart loses efficiency, fluid can accumulate in or around the lungs, causing a moist or wet cough. This type of coughing in dogs is often worse at night or after exercise. Certain breeds are predisposed to heart disease, including Cavalier King Charles Spaniels, Dachshunds, and Boxers, but it can affect any breed as they age. If your middle-aged or senior dog keeps coughing, heart disease should be on the list of possibilities to rule out.

Pneumonia

Bacterial or viral pneumonia causes inflammation and fluid accumulation in the lungs, resulting in a productive, wet-sounding cough. Dogs with pneumonia are typically very ill — they appear lethargic, may have a fever, and often have difficulty breathing. Pneumonia in dogs requires prompt veterinary diagnosis and treatment, including antibiotics if bacterial in origin.

Tracheal Collapse

Tracheal collapse is a condition where the rings of cartilage that support the trachea weaken and flatten during breathing. It produces a very distinctive goose-honk cough that worsens with excitement, exercise, or pressure on the neck (such as from a collar). Small and toy breeds, including Chihuahuas, Yorkshire Terriers, and Pomeranians, are most commonly affected. Managing tracheal collapse involves veterinary evaluation and may include medications, weight management, and harness use.

Allergies and Environmental Irritants

Dogs in the Houston and greater Gulf Coast area deal with year-round environmental allergens, including mold, pollen, and dust. Chronic coughing in dogs can sometimes be related to respiratory allergies or irritation from smoke, chemical sprays, or airborne pollutants. Allergic coughing in dogs may be accompanied by sneezing, watery eyes, or skin issues.

Types of Dog Coughs and What They May Indicate

The sound and character of a dog’s cough can offer important clues. When you call Advanced Pet Care of Clear Lake, our team will likely ask you to describe the cough. Here is a general guide to different types of dog coughs:

• Honking or goose-like cough: Often associated with tracheal collapse or kennel cough
• Wet or productive cough: May indicate pneumonia, heart disease with fluid accumulation, or other lower respiratory conditions
• Dry, hacking cough: Common with kennel cough, canine influenza, or upper respiratory infection
• Cough followed by gagging or retching: May suggest a foreign body, reverse sneeze, or post-nasal drip
• Chronic, soft cough with fatigue: Can be associated with heartworm disease or early heart disease

When to Take Your Dog to the Vet for Coughing

Some coughing is mild and resolves on its own. Other cases require prompt veterinary care. Contact Advanced Pet Care of Clear Lake if your dog has been coughing for more than a few days with no improvement, if coughing is accompanied by lethargy, fever, loss of appetite, or difficulty breathing, if the cough sounds wet or productive, or if your dog is coughing up blood or foamy fluid. Any dog who is struggling to breathe, has blue or gray gums, or collapses should receive emergency veterinary care immediately.

Coughing in Senior Dogs

A senior dog that keeps coughing warrants prompt veterinary attention. Older dogs are more susceptible to heart disease, cancer, and other conditions that can cause chronic coughing. Waiting to see if it resolves on its own is often not the right approach for a dog over seven years old. The veterinarians at Advanced Pet Care of Clear Lake recommend that senior dogs have twice-yearly wellness exams, which can help identify developing conditions before symptoms become severe.

How Vets Diagnose the Cause of Dog Coughing

When you bring a coughing dog to Advanced Pet Care of Clear Lake, our team will begin with a complete history and physical examination, including listening to the heart and lungs. Depending on the findings, we may recommend diagnostic testing to identify the underlying cause.

• Chest X-rays: Help visualize the lungs, heart size, and presence of fluid or masses
• Heartworm test: A simple in-house blood test to check for heartworm antigen
• Bloodwork and urinalysis: Provide a broad assessment of organ function and overall health
• Echocardiogram: An ultrasound of the heart, recommended when cardiac disease is suspected

Preventing Coughing in Dogs: The Role of Routine Care

Many of the most common causes of coughing in dogs are preventable or manageable with routine veterinary care. Staying current on vaccinations, including Bordetella and canine influenza, reduces infectious causes. Monthly heartworm prevention eliminates the risk of heartworm disease, which is critical in the Gulf Coast region where mosquitoes are active year-round. Annual or biannual wellness visits to Advanced Pet Care of Clear Lake allow our team to monitor your dog’s cardiac health, respiratory status, and overall condition over time.

Dogs with a history of respiratory problems, small-breed dogs prone to tracheal issues, and senior dogs may benefit from more frequent monitoring. Ask our team about the preventive care schedule that is right for your dog’s individual needs and lifestyle.

A Cough That Keeps Coming Back Deserves a Closer Look

A dog that keeps coughing is not just a nuisance to listen to. It is a pet telling you something is not right. Whether the cause turns out to be something straightforward like kennel cough or something that requires more investigation, getting an accurate diagnosis is the first step toward helping your dog breathe easier.

Advanced Pet Care of Clear Lake in Webster, TX is here to help. Our veterinary team provides comprehensive respiratory and cardiac evaluations for dogs of all ages and breeds. If your dog has been coughing and you are ready for answers, give us a call at (281) 486-1509 or book an appointment online. We serve dog owners throughout Webster, Clear Lake, Nassau Bay, League City, and the greater Houston area.