Kennel cough is a highly contagious respiratory infection that causes a strong, hacking cough in dogs. It spreads easily where dogs gather, such as daycare, boarding, grooming, and dog parks. Most cases are mild, but some need veterinary care. At Langley Meadows Animal Hospital, our team can help with prevention and treatment.

What kennel cough actually is

Kennel cough is the common name for a contagious cough caused by several bacteria and viruses, often more than one at a time. It inflames the windpipe and airways, producing the distinctive cough that gives it its name. It is sometimes called canine infectious respiratory disease, and while it sounds alarming, most healthy adult dogs recover well, much like people getting over a chest cold.

The telltale cough and other signs

The hallmark is a sudden, forceful, dry cough that often sounds like a honk, and some dogs end with a gag or bring up a little foam, which owners sometimes mistake for vomiting. Other signs can include sneezing, a runny nose, mild tiredness, and a reduced appetite. Many dogs otherwise feel reasonably well, but the cough can be persistent and is often worse with excitement, exercise, or pressure on the collar.

How kennel cough spreads

Kennel cough is very contagious and spreads the way human colds do: through droplets in the air when a dog coughs, through direct nose-to-nose contact, and through shared surfaces like water bowls, toys, and kennel walls. Anywhere dogs gather closely, such as boarding facilities, daycare, grooming salons, training classes, and busy dog parks, raises the risk. A dog can also spread it before looking obviously sick, which is why it moves through social settings so quickly.

Which dogs are most at risk

Any dog can catch kennel cough, but social dogs who board, attend daycare, or frequent dog parks meet more germs and so face higher exposure. The infection tends to be milder in healthy adults and more concerning in puppies, senior dogs, and those with other health conditions or weaker immune systems, who can develop more serious illness. Knowing where your dog sits on that spectrum helps you decide how cautious to be.

Preventing kennel cough

Vaccination is the cornerstone of prevention. The Bordetella vaccine, often given alongside other respiratory vaccines, is commonly recommended for social dogs and is required by many boarding and daycare facilities. Our wellness program keeps these vaccines on schedule. Beyond vaccination, avoid contact with visibly coughing dogs, choose well-ventilated, clean facilities, and do not share bowls or toys at parks. No vaccine prevents every case, since many germs are involved, but it reduces the risk and tends to make illness milder.

When to see your veterinarian

Many mild cases improve with rest over a week or two, but some need care. Contact your veterinarian if the cough is severe or lasting, or if your dog is lethargic, off food, running a fever, breathing rapidly or with effort, or producing coloured nasal discharge. Puppies, senior dogs, and dogs with health conditions should be seen sooner, since they can develop pneumonia. Our medical services and urgent care teams can assess your dog, and pet diagnostics help when the picture is unclear.

Recovery and rest

A dog recovering from kennel cough needs rest and isolation from other dogs to avoid spreading it, usually for a week or more after signs resolve. Use a harness rather than a collar to avoid irritating the windpipe, keep the air humidified if you can, and follow any treatment your veterinarian prescribes. With time and care, the vast majority of dogs make a full recovery.

Telling kennel cough apart from other coughs

Not every cough is kennel cough, and the difference matters. Kennel cough usually brings a sudden, dry, honking cough in a dog who is otherwise fairly bright, often after a recent stay somewhere social. Other causes of coughing, such as heart disease, a windpipe problem, allergies, or something inhaled, can look similar at first but tend to come with their own clues and may need very different treatment.

This is why a lingering or unusual cough is worth a veterinary look rather than assuming it is just kennel cough. Mentioning where your dog has been recently, when the cough started, and what it sounds like helps your veterinary team sort one cause from another and point you toward the right care.

Frequently asked questions

Is kennel cough dangerous?

For most healthy adult dogs it is mild and self-limiting, like a chest cold. It can be more serious in puppies, seniors, and dogs with other health problems, who may need veterinary care, so monitoring matters.

Can a vaccinated dog still get kennel cough?

Yes, because many different germs cause it and no vaccine covers them all. The Bordetella vaccine still lowers the risk and usually makes illness milder, which is why it is widely recommended for social dogs.

How long is my dog contagious?

Dogs can spread kennel cough for a week or more, sometimes longer, even as they start to feel better. Keep your dog away from other dogs until your veterinarian advises it is safe.

Can my dog give kennel cough to my cat or to me?

It is overwhelmingly a dog-to-dog illness. Spread to cats or people is very uncommon. The main concern is passing it to other dogs, so isolation during recovery is important.

Should I take my coughing dog to a dog park?

No. Keep a coughing dog away from other dogs and shared spaces to prevent spreading the infection. Rest at home and call your veterinarian if signs are severe or lasting.

My dog only coughs sometimes. Do I still need the vet?

If your dog is otherwise bright and eating, you can monitor a mild cough briefly, but call if it worsens or lingers. Puppies, seniors, and dogs with health issues should be seen sooner.