Dog Kennel Cough: Symptoms, Treatment, and Prevention Tips

Dog kennel cough is a highly contagious respiratory infection that causes a harsh, honking cough, and most healthy dogs recover within one to three weeks with proper veterinary care. The illness spreads quickly wherever dogs gather, so even a quick trip to the groomer or dog park can expose your pup. While many cases stay mild, kennel cough can sometimes progress to pneumonia, especially in puppies, senior dogs, and pets with other health conditions. At Embassy Lakes Animal Hospital in Cooper City, FL, we see an uptick in coughing dogs whenever boarding and daycare traffic picks up around the holidays and summer travel season. In this guide, you’ll learn what kennel cough is, how to recognize it, how veterinarians confirm and treat it, and which steps lower your dog’s risk of catching it in the first place.

What Is Kennel Cough in Dogs, and What Causes It?

Kennel cough, known medically as canine infectious respiratory disease complex (CIRDC) or infectious tracheobronchitis, is an inflammation of a dog’s windpipe and airways caused by one or more contagious germs.

The Germs Behind the Cough

Rather than a single disease, kennel cough is a group of infections that produce similar symptoms. A dog can carry more than one of these organisms at the same time, which may make the illness more severe. The most common culprits include:

• Bordetella bronchiseptica, a bacterium and one of the most frequent causes
• Canine parainfluenza virus, which often teams up with Bordetella
• Canine adenovirus type 2
• Canine influenza virus (strains H3N8 and H3N2)
• Mycoplasma species and canine respiratory coronavirus

How Kennel Cough Spreads

These germs travel through airborne droplets when an infected dog coughs or sneezes. They also spread through direct nose-to-nose contact and shared items like water bowls, toys, and leashes. Boarding facilities, grooming salons, doggy daycares, shelters, training classes, and dog parks all create ideal conditions for transmission because many dogs share the same air and surfaces.

Which Dogs Face the Highest Risk?

Any dog can catch dog kennel cough, but certain pets are more vulnerable to complications. Puppies have immature immune systems, and older dogs may have weaker defenses. Flat-faced breeds such as Pugs, Bulldogs, and Shih Tzus can struggle more because of their narrow airways. Dogs with heart disease, collapsing trachea, or other chronic conditions also warrant closer monitoring. Stress, poor ventilation, and cold or dusty environments can further weaken the airway’s natural defenses and make infection more likely.

Symptoms of Kennel Cough in Dogs: What to Watch For

The hallmark sign of kennel cough is a forceful, dry cough that many owners say sounds like a goose honking.

Symptoms usually appear three to ten days after exposure. Many owners first notice the cough after their dog pulls against the collar, gets excited, or wakes from a nap. The coughing fit may end with gagging or retching, which can look as though the dog is trying to bring something up. Because of this, people sometimes mistake kennel cough for a dog with something stuck in its throat.

Mild Versus Complicated Cases

In uncomplicated cases, dogs often stay bright, eat well, and remain playful despite the cough. More serious infections can affect the whole body. Signs that the illness may be progressing include:

• Lethargy or a noticeable drop in energy
• Loss of appetite
• Fever
• Thick yellow or green nasal discharge
• Rapid, labored, or noisy breathing
• A wet, productive cough instead of a dry, honking one

Conditions That Can Look Like Kennel Cough

Not every cough points to an infection. Heart disease, collapsing trachea, allergies, heartworm disease, lung tumors, and inhaled foreign objects can all cause coughing in dogs. Heartworm deserves special mention here in South Florida, where mosquitoes are active year-round. Since these conditions require very different care, it’s important not to assume a coughing dog simply has kennel cough. A veterinary exam is the most reliable way to identify the real cause, especially for senior dogs or pets with existing health issues.

How Veterinarians Diagnose and Treat Kennel Cough

Veterinarians usually diagnose kennel cough based on a dog’s symptoms, physical exam findings, and recent history of contact with other dogs.

The Diagnostic Process

During the visit, your vet will listen to your dog’s heart and lungs, check their temperature, and gently feel the throat area, since light pressure on the trachea often triggers a cough in affected dogs. Be ready to share whether your pet recently visited a boarding facility, groomer, daycare, or dog park. For mild cases, this history and exam are often enough to reach a diagnosis.

When symptoms are more severe or don’t improve, your veterinarian may recommend additional testing, such as:

• Chest X-rays to look for pneumonia or other lung changes
• Bloodwork to evaluate infection and overall health
• A respiratory PCR panel using a nasal or throat swab to identify the specific germs involved
• Heartworm testing to rule out other causes of coughing

Treatment Options Your Vet May Recommend

Treatment depends on how sick your dog is. Because many cases are viral, mild infections often resolve with rest and supportive care under your veterinarian’s guidance. When a bacterial infection like Bordetella is suspected, or when symptoms are more serious, your vet may prescribe antibiotics. Some dogs also benefit from prescription cough suppressants or anti-inflammatory medications to ease airway irritation. Dogs that develop pneumonia may need hospitalization for oxygen therapy, IV fluids, and close monitoring.

Always avoid giving human cough medicines or other over-the-counter products, since many contain ingredients that are toxic to dogs. Your veterinarian will choose the safest and most effective approach for your pet’s specific case.

Recovery and Management: What to Expect After a Diagnosis

Most dogs with uncomplicated kennel cough recover within one to three weeks, though some coughs can linger a bit longer as the airway heals.

Supporting a Smooth Recovery

Follow your veterinarian’s instructions closely and give any prescribed medications for the full course, even if your dog starts to sound better. Many vets recommend switching from a collar to a harness during recovery, since pressure on the neck can trigger coughing fits. A calm, quiet home environment with limited strenuous activity also gives your dog’s respiratory tract time to heal.

Protecting Other Dogs in Your Community

Dogs with kennel cough can remain contagious for days or even weeks after symptoms fade, depending on the germs involved. During this time, keep your pet away from daycare, boarding, grooming appointments, dog parks, and playdates. If you have more than one dog at home, ask your veterinarian how to reduce the chance of spread between them. Let any facility your dog recently visited know about the diagnosis so they can alert other pet owners and step up cleaning.

When to Call the Vet Again

Reach back out to your veterinary team right away if your dog’s breathing becomes fast or labored, the cough turns wet, your pet stops eating, or they seem weak and listless. These changes can signal pneumonia, which needs prompt medical attention. Puppies, seniors, and flat-faced breeds deserve an especially low threshold for a recheck. If symptoms last longer than three weeks, schedule a follow-up as well, since a persistent cough may point to another underlying problem.

How Embassy Lakes Animal Hospital Helps Prevent Kennel Cough

The best defense against dog kennel cough is a combination of vaccination and smart socialization habits. The Bordetella vaccine, available as an injectable, intranasal, or oral option, helps reduce the risk and severity of infection. Vaccines for canine parainfluenza, adenovirus, and canine influenza offer additional protection, especially for dogs that board, attend daycare, or visit groomers regularly. Keep in mind that no vaccine prevents every strain, but vaccinated dogs typically experience milder illness.

Beyond vaccines, try to avoid crowded dog areas during local outbreaks, skip shared water bowls, and choose boarding facilities that require up-to-date vaccinations and maintain good ventilation. Our team at Embassy Lakes Animal Hospital can recommend a vaccine schedule based on your dog’s lifestyle and upcoming travel or boarding plans. To book a wellness visit or discuss a coughing pup, call Embassy Lakes Animal Hospital at (954) 432-5811.