Kennel cough in dogs is one of the most common and most contagious respiratory infections your pet can pick up. It causes a persistent, honking cough that can show up after a stay at a boarding facility, a grooming appointment, or even a quick hello at the dog park. If your dog has been coughing lately and you’re not sure why, keep reading. This guide covers everything you need to know about kennel cough symptoms in dogs, when they’re worth worrying about, and when it’s time to call your veterinarian.
What Is Kennel Cough?
Kennel cough, formally known as canine infectious tracheobronchitis, is an umbrella term for a group of highly contagious upper respiratory infections in dogs. The infection targets the trachea and bronchi, causing inflammation that produces that unmistakable, forceful cough.
Multiple pathogens can cause kennel cough, but the most common culprits are the bacterium Bordetella bronchiseptica and viruses such as canine parainfluenza and canine adenovirus type 2. In many cases, a combination of organisms is responsible.
How Does Kennel Cough Spread?
Kennel cough spreads through direct contact with infected dogs, airborne respiratory droplets, and contaminated surfaces like shared water bowls, toys, and kennel walls. Any place where dogs congregate creates conditions for rapid spread including boarding facilities, dog parks, training classes, shelters, and grooming salons are all common transmission sites. That’s why the name “kennel cough” stuck even though your dog doesn’t need to set foot in a kennel to catch it.
Common Kennel Cough Symptoms in Dogs
The hallmark kennel cough symptom in dogs is a persistent, dry, hacking cough, often described as a honking or gagging sound. It can be startling for pet owners who may worry their dog is choking. The cough typically worsens with activity, excitement, or pressure on the collar and throat area.
Here are the most common signs of kennel cough to watch for:
- Persistent dry or honking cough: often triggered by activity or collar pressure
- Retching or gagging: particularly after coughing episodes, sometimes producing white foam
- Runny nose: mild nasal discharge that may be clear or slightly cloudy
- Sneezing: especially in the early stages of infection
- Low-grade fever: not always present, but possible in more serious cases
- Lethargy: your dog may seem less energetic or interested in play
- Reduced appetite: mild disinterest in food, particularly if the throat is irritated
Most dogs with kennel cough remain alert and active despite the cough. They eat, drink, and behave relatively normally, which can sometimes make it harder to recognize just how sick they actually are.
What Does Kennel Cough Sound Like?
Kennel cough in dogs produces a very distinctive sound: a harsh, dry, repetitive cough that many pet owners compare to a goose honking. Some dogs follow a coughing fit with a gag or retch, which can look like they’re trying to bring something up. This is a reflexive response to throat irritation, not a sign that something is stuck.
Kennel Cough vs. Other Respiratory Conditions
Not every cough is kennel cough. Several other conditions including collapsing trachea, heart disease, canine influenza, and allergies can produce similar kennel cough symptoms in dogs. That’s why a veterinary diagnosis is so important. Our team at Live Oak Veterinary Hospital in Sonora, CA can help determine the cause of your dog’s cough and recommend the right course of action.
Is Kennel Cough Serious?
In healthy adult dogs, kennel cough is usually mild and resolves on its own within one to three weeks. However, the infection can be more serious and even life-threatening in puppies, senior dogs, pregnant dogs, and dogs with weakened immune systems or pre-existing health conditions.
Left untreated in vulnerable dogs, kennel cough can progress to pneumonia, a much more serious condition that requires intensive veterinary care. Even in otherwise healthy dogs, severe or prolonged kennel cough warrants a vet visit to rule out complications.
When Should I Take My Dog to the Vet for Kennel Cough?
While mild kennel cough may run its course, certain warning signs mean it’s time to call Live Oak Veterinary Hospital right away:
- Coughing that lasts longer than three weeks
- Worsening symptoms despite rest and monitoring
- Labored breathing or shortness of breath
- High fever, extreme lethargy, or loss of appetite
- Green or yellow nasal discharge, which may indicate a secondary infection
- Your dog is a puppy, elderly, or immunocompromised
How Is Kennel Cough Diagnosed and Treated?
A veterinarian typically diagnoses kennel cough based on the dog’s history, clinical signs, and a physical examination. Additional testing such as bloodwork, chest X-rays, or a culture of nasal or throat secretions may be recommended to rule out other conditions or identify the specific pathogen involved.
Treatment depends on the severity of the infection. Mild cases may only require rest and supportive care, while more significant infections may call for antibiotics to address bacterial involvement, cough suppressants, and anti-inflammatory medications. Your veterinarian will develop the most appropriate treatment plan for your individual dog.
Can Kennel Cough Be Prevented?
Yes, vaccination is the most effective way to protect your dog against kennel cough. The Bordetella vaccine targets the most common bacterial cause and is often required by boarding facilities, daycares, and groomers. Combination vaccines are also available that protect against canine parainfluenza and other respiratory viruses associated with kennel cough.
Additional steps to reduce risk include:
- Keeping your dog’s routine vaccinations current
- Avoiding contact with visibly sick dogs
- Choosing boarding and daycare facilities with strong hygiene protocols
- Washing your hands and your dog’s belongings after visits to communal spaces
If your dog regularly visits places where they encounter other dogs, talk to our team at Live Oak Veterinary Hospital about the right vaccination schedule to keep them protected year-round.
Your Dog’s Cough Deserves a Closer Look
Kennel cough symptoms in dogs can range from a mild nuisance to a serious health concern, and the line between the two isn’t always obvious. If your dog has been coughing, whether after a boarding stay, a trip to the dog park, or for no obvious reason, our team at Live Oak Veterinary Hospital in Sonora, CA is here to help. Early evaluation means faster relief for your dog and peace of mind for you. Call us at 209-432-9437 or book an appointment online today.