Most dogs with kennel cough recover on their own within three weeks with rest and simple home care. The cough sounds alarming, often a harsh, honking hack that can make it seem like something is stuck in your dog’s throat, but uncomplicated cases rarely need aggressive treatment. Your main jobs are keeping your dog comfortable, watching for signs of complications, and preventing spread to other dogs.
Confirm It’s Actually Kennel Cough
Kennel cough produces a distinctive dry, forceful cough that often ends with a gag or retch. Many owners mistake it for choking. The cough is easily triggered by light pressure on the throat, excitement, or drinking water. Between coughing fits, most dogs act completely normal: eating, drinking, and staying alert.
Other conditions can mimic that cough. Tracheal collapse, heart disease, and canine influenza all cause persistent coughing but require very different treatment. If your dog recently spent time around other dogs (boarding, daycare, dog parks, groomers) and developed a sudden cough within about a week, kennel cough is the most likely explanation. If there’s no obvious exposure, or if the cough came on gradually, a vet visit to rule out other causes is a good idea.
Keep Your Dog Rested and Hydrated
Kennel cough is typically treated with one to two weeks of rest. That means cutting out walks beyond short bathroom breaks, skipping fetch, and avoiding anything that gets your dog panting or excited. Physical exertion irritates the airways and makes coughing worse. Also limit stressful activities like nail trimming or baths while your dog is recovering.
Hydration matters more than usual because repeated coughing dries out and inflames the throat. If your dog is drinking less than normal, try mixing low-sodium chicken stock into their water or kibble. This can encourage drinking while also keeping their appetite up.
Use Steam and Humidity to Ease Coughing
Moist air soothes irritated airways and can reduce coughing fits. Place a humidifier or vaporizer near your dog’s sleeping area and keep it running, especially overnight when coughing tends to be worst.
For a quick steam session, close your bathroom door, run the shower on the hottest setting for 15 to 20 minutes, then sit with your dog in the steamy bathroom for 15 to 25 minutes. You’re not putting your dog in the shower. You’re just letting them breathe the warm, humid air. Many dogs show noticeable relief after a single session, and you can repeat this a couple of times a day.
Honey as a Cough Soother
Raw, unpasteurized honey can coat the throat and temporarily reduce coughing. The typical guideline is 1 teaspoon for small dogs and up to 1 tablespoon for larger dogs, given two to three times a day. You can offer it straight off a spoon or mix it into food. Don’t give honey to puppies under one year old or dogs with diabetes.
Switch to a Harness
If your dog wears a collar on walks, switch to a harness for the duration of the illness. Collars put direct pressure on the trachea, which triggers coughing and can worsen throat inflammation. A harness distributes pressure across the chest instead, keeping walks (even short ones) more comfortable.
Isolate Your Dog From Other Dogs
Kennel cough spreads easily through airborne droplets and shared surfaces like water bowls and toys. Dogs are actually contagious before symptoms appear, which is part of why kennel cough moves so quickly through boarding facilities. Once your dog is coughing, keep them completely separated from other dogs until they’ve fully recovered. That means no dog parks, no daycare, no playdates, and no shared spaces with neighborhood dogs. If you have multiple dogs at home and one starts coughing, separation is ideal but may be too late since exposure likely already happened.
When Your Dog Needs a Vet
An uncomplicated case looks like a dog that coughs a lot but otherwise seems fine: eating normally, staying alert, no fever. That dog will generally recover within three weeks, though a lingering cough can persist for up to six weeks in some cases.
Call your vet if you notice any of the following:
- Loss of appetite or lethargy. A dog that stops eating, seems unusually tired, or loses interest in things they normally enjoy may be developing a secondary infection.
- Thick or colored nasal discharge. Clear nasal drip is common with kennel cough, but green or yellow discharge suggests a bacterial infection has taken hold.
- Labored breathing. Rapid, shallow breathing or visible effort between coughing fits can signal pneumonia.
- Fever. A rectal temperature above 103°F (39.4°C) in a dog warrants a vet call.
- Symptoms lasting beyond three weeks without improvement, or worsening at any point.
Puppies, senior dogs, and dogs with flat faces (bulldogs, pugs, Boston terriers) are more vulnerable to complications and generally benefit from a vet visit early on rather than a wait-and-see approach.
What a Vet Visit Looks Like
Most cases of kennel cough are caused by viruses, so antibiotics won’t help the typical case. Your vet may prescribe antibiotics if there’s a high risk of secondary bacterial infection or clear signs one has already developed. When coughing is severe enough to prevent your dog from sleeping or resting, a vet can prescribe a cough suppressant to give them some relief.
If the infection progresses to pneumonia, treatment becomes more intensive and may require hospitalization for IV fluids, oxygen support, and stronger antibiotics. This is uncommon in otherwise healthy adult dogs but does happen, which is why watching for the warning signs above matters.
Preventing Future Episodes
A combination oral vaccine covering the two most common kennel cough culprits, Bordetella bacteria and parainfluenza virus, provides protection for at least one year. In studies, only 9% of vaccinated dogs showed clinical signs of illness after exposure to Bordetella, compared to 74% of unvaccinated dogs. Most boarding facilities and daycares require proof of vaccination for exactly this reason.
Vaccination doesn’t guarantee your dog won’t get kennel cough. Multiple pathogens can cause the same set of symptoms, and no single vaccine covers all of them. But it significantly reduces the odds and tends to make any breakthrough case milder and shorter. If your dog regularly spends time around other dogs, keeping the vaccine current is worth it.