Most cases of kennel cough are mild and resolve on their own within 7 to 10 days with simple home care. The condition is an inflammation of the trachea caused by a mix of viruses and bacteria, and for otherwise healthy adult dogs, it plays out much like a human cold. Your main job at home is keeping your dog comfortable, protecting their irritated airway, and watching for signs that the illness is getting worse.
What Kennel Cough Looks and Sounds Like
The hallmark is a persistent, forceful cough that sounds like a honking goose. Some dogs also gag or retch at the end of a coughing fit, which can look alarming but is usually just the irritation triggering their gag reflex. Between coughing episodes, most dogs with uncomplicated kennel cough still eat, drink, and act fairly normal. If your dog is lethargic, refusing food, running a fever, or producing thick nasal discharge, that’s a different situation (more on that below).
Steam and Humidity for Airway Relief
Moist air is one of the simplest ways to soothe an inflamed trachea. Run a hot shower with the bathroom door closed and let the room fill with steam, then sit with your dog in the steamy bathroom for 10 to 15 minutes. You’re not putting the dog in the shower. You’re just letting them breathe the warm, humid air. Many dogs cough less noticeably during and after a steam session.
If your dog’s coughing is worse at night, place a cool-mist humidifier in the room where they sleep. Dry indoor air, especially during winter with the heat running, makes tracheal irritation worse. Keeping the air moist overnight can reduce coughing fits and help your dog rest.
Honey as a Cough Soother
A small amount of honey can coat and calm an irritated throat. The key is getting the dose right for your dog’s size:
- Extra-small dogs (2 to 10 lbs): 1/8 teaspoon
- Small dogs (11 to 20 lbs): 1/4 teaspoon
- Medium dogs (21 to 50 lbs): 1/2 to 1 teaspoon
- Large dogs (51 to 90 lbs): 2 teaspoons
- Extra-large dogs (91+ lbs): 1 tablespoon
You can offer this once or twice a day while symptoms last. Most dogs will lick it right off a spoon. Don’t give raw (unpasteurized) honey to puppies under one year old, because their immune systems aren’t mature enough to handle the botulism spores that raw honey can carry. Dogs with diabetes or significant weight issues should also skip the honey, since it’s essentially sugar.
Switch to a Harness
If your dog normally wears a collar on walks, switch to a harness for the duration of the illness. A collar puts direct pressure on the trachea every time your dog pulls, and when that trachea is already inflamed, even gentle leash tension can trigger a coughing fit. A harness distributes the force across the chest and shoulders instead. This single change often makes a noticeable difference in how frequently your dog coughs during and after walks.
Rest, Hydration, and Reducing Irritants
Treat kennel cough recovery like you’d treat a bad cold in yourself. Cut back on vigorous exercise. Long runs and intense fetch sessions increase breathing rate and dry out the airway, which makes coughing worse. Short, calm leash walks are fine.
Make sure fresh water is always available. Some dogs drink less when they’re not feeling well, so you can make water more appealing by adding a small splash of low-sodium chicken broth. If your dog is eating kibble, softening it with warm water can make swallowing easier on a sore throat.
Avoid exposing your dog to cigarette smoke, strong cleaning products, aerosol sprays, or heavy dust during recovery. Any airborne irritant will aggravate an already inflamed trachea.
Keep Your Dog Away From Other Dogs
Kennel cough spreads easily through direct contact, shared water bowls, and even airborne droplets from coughing. Keep your sick dog isolated from other dogs until they’ve fully recovered. That means no dog parks, no doggy daycare, no boarding, and no nose-to-nose greetings on walks. If you have multiple dogs at home and one gets sick, separate them as much as practically possible, and wash your hands after handling the sick dog.
Never Give Human Cough Medicine
This is one of the most important things to know about home treatment: do not reach into your medicine cabinet. Human cough suppressants, cold medicines, and pain relievers contain ingredients that are toxic to dogs. Ibuprofen can cause stomach ulcers, kidney damage, and seizures in dogs even at relatively low doses. Acetaminophen is similarly dangerous. Many liquid cold medicines contain decongestants like oxymetazoline or xylometazoline, which can cause dangerous drops in heart rate and blood pressure. Some formulations also include the sweetener xylitol, which is life-threatening for dogs.
Even antihistamines that seem mild to us, like diphenhydramine, can cause tremors, rapid heart rate, and seizures in dogs at the wrong dose. The bottom line: no human medication should go into your dog without explicit veterinary guidance for that specific product and dose.
Signs That Home Care Isn’t Enough
Most dogs bounce back within a week to 10 days. But kennel cough can occasionally progress to pneumonia, particularly in puppies under six months, senior dogs, or dogs with weakened immune systems. The warning signs are distinct from a simple cough:
- Labored breathing: visible effort to inhale, belly heaving, or breathing with the mouth open at rest
- Wet, productive cough: the cough shifts from dry and honking to moist and rattling
- High fever: a warm, dry nose isn’t reliable, but lethargy combined with shivering or panting at rest suggests fever
- Thick nasal discharge: especially if it’s yellow or green
- Refusing food or water for more than 24 hours
If you see any of these, your dog needs veterinary attention. Pneumonia from kennel cough can require antibiotics, oxygen support, and sometimes IV fluids. Catching it early makes a significant difference in recovery.
What Recovery Looks Like
In a typical case, the cough is most intense during the first three to four days, then gradually becomes less frequent. You might notice your dog still coughs after drinking water, getting excited, or pulling against the leash even as they’re clearly improving. That lingering cough can hang on for a few days after your dog otherwise seems back to normal. Once the cough is completely gone and your dog’s energy and appetite are back to their usual levels, they’re recovered and safe to be around other dogs again.