Most cases of kennel cough in puppies resolve on their own within one to two weeks with basic supportive care at home. Puppies are more vulnerable than adult dogs to complications, though, so knowing the difference between a normal recovery and a worsening infection matters. Here’s what treatment looks like, what you can do at home, and when to get your vet involved.
What Kennel Cough Is and Why Puppies Get It
Kennel cough, formally called canine infectious respiratory disease complex, is an umbrella term for upper respiratory infections caused by a mix of viruses and bacteria. The most common culprit is the bacterium Bordetella bronchiseptica, often working alongside viruses like parainfluenza and canine adenovirus. These pathogens spread through airborne droplets, direct nose-to-nose contact, and contaminated surfaces like shared water bowls and toys.
Puppies pick it up easily in places where dogs congregate: boarding facilities, doggy daycares, training classes, shelters, and dog parks. Their immune systems are still developing, which means they’re both more likely to catch it and more likely to have a harder time fighting it off compared to a healthy adult dog.
The Typical Recovery Without Medication
The hallmark symptom is a dry, honking cough that sounds like your puppy has something stuck in their throat. Between coughing fits, most puppies with uncomplicated kennel cough still eat, drink, play, and act fairly normal. If that describes your puppy, you’re likely looking at a straightforward recovery.
Antibiotics are not usually necessary or recommended for uncomplicated cases. The infection runs its course in roughly 7 to 14 days. Your vet may suggest a checkup to confirm the diagnosis and rule out other causes of coughing (like distemper or a foreign object), but treatment at that point is focused on keeping your puppy comfortable while their immune system does the work.
Home Care That Actually Helps
A few simple adjustments at home can make a noticeable difference in how comfortable your puppy feels during recovery.
Switch to a harness. A collar puts pressure directly on the trachea, which is already irritated and inflamed. A harness eliminates that pressure and can reduce coughing fits on walks.
Use steam sessions. Run a hot shower with the bathroom door closed and sit with your puppy in the steam-filled room for 10 to 15 minutes. The warm, moist air helps loosen mucus and soothes irritated airways. You can do this once a day or more, depending on how congested your puppy seems. If your vet prescribes a nebulizer with saline solution, that works on the same principle but delivers moisture more directly.
Keep the air humid. A cool-mist humidifier near your puppy’s sleeping area provides ongoing relief, especially in dry climates or homes with central heating.
Encourage rest and fluids. Limit strenuous play and long walks, which can trigger coughing episodes. Make sure fresh water is always available. Some puppies drink more readily from a shallow bowl or if the water is slightly warmed.
Be cautious with honey. You may see recommendations to give honey as a natural cough soother. Raw (unpasteurized) honey should not be given to puppies under one year old due to the risk of botulism spores. If your puppy is old enough and your vet approves, the amount should be small and based on weight: about an eighth of a teaspoon for a puppy under 10 pounds, a quarter teaspoon for 11 to 20 pounds, and up to a half teaspoon for puppies in the 21 to 50 pound range. This is a comfort measure, not a treatment.
When Antibiotics Are Needed
Antibiotics enter the picture when there are signs that bacteria have moved into the lungs and caused pneumonia, or when the illness drags on beyond 10 days without improvement. Puppies are at higher risk for this progression than adult dogs, so watch closely.
If your vet determines antibiotics are warranted, they’ll typically prescribe an oral course lasting 7 to 14 days. The specific medication depends on your puppy’s age, size, and the severity of infection. In some cases, your vet will collect swab samples from your puppy’s throat, nose, or eyes and send them to a lab to identify exactly which bacteria are involved, which helps target the antibiotic choice more precisely.
Finish the full course of antibiotics even if your puppy seems better after a few days. Stopping early can allow resistant bacteria to bounce back.
Red Flags That Need Immediate Attention
Uncomplicated kennel cough is annoying but not dangerous. Bacterial pneumonia is. Puppies can deteriorate quickly, so don’t take a wait-and-see approach if you notice any of these signs:
- Lethargy: Your puppy is noticeably less active, sleeping much more than usual, or uninterested in things that normally get them excited.
- Loss of appetite: Skipping one meal can happen, but refusing food for more than a day is concerning.
- Fever: A normal temperature for a puppy is roughly 101 to 102.5°F. Anything above that range warrants a call to your vet.
- Wet, productive cough: The cough shifts from dry and honking to thick and mucus-filled.
- Rapid or labored breathing: Your puppy is breathing faster than normal at rest, or you can see their sides heaving with effort.
- Symptoms worsening despite care: If your puppy seems to be getting worse rather than gradually better over the first week, that’s a signal to get veterinary testing done.
Any combination of these symptoms can indicate that the infection has spread to the lungs. Pneumonia in young puppies can become life-threatening without prompt treatment.
How Long Your Puppy Stays Contagious
Even after the cough disappears, your puppy can still spread the infection to other dogs. Plan to keep your puppy away from dog parks, boarding facilities, daycares, and group training classes for at least 14 days after their last symptom. That’s generally how long it takes for a dog to fully clear the infection and stop shedding the pathogens.
During this isolation period, stick to solo walks in low-traffic areas. If you have other dogs in the household, they’ve likely already been exposed. Keep an eye on them for symptoms, but separating them after they’ve been in close contact for days is usually more stressful than helpful.
Cleaning Your Home After Infection
Bordetella and the viruses that cause kennel cough can survive on surfaces like food bowls, toys, bedding, and crate floors. Once your puppy has recovered, wash all fabric items (beds, blankets, soft toys) in hot water. Hard surfaces and non-porous toys can be cleaned with a diluted bleach solution or another common household disinfectant. If you use a shared crate or kennel, let it sit empty for one to two weeks after cleaning before housing another dog in it.
Preventing Future Infections
A Bordetella vaccine is the primary tool for prevention. Intranasal and oral versions can be given as early as 3 weeks of age depending on the product, with some starting at 7 or 8 weeks. Injectable versions require two doses given 2 to 4 weeks apart. After the initial series, annual boosters are recommended.
The vaccine doesn’t guarantee your puppy won’t get kennel cough, because multiple pathogens can cause it and new strains emerge regularly. But vaccinated dogs who do get infected tend to have milder, shorter illnesses. Most boarding facilities, daycares, and training classes require proof of Bordetella vaccination, so it’s worth getting on your puppy’s schedule early if they’ll be socializing in group settings.
Beyond vaccination, good ventilation in indoor spaces where dogs gather makes a meaningful difference. Avoid dog parks during local outbreaks if your area’s veterinary community sends out alerts, and skip communal water bowls in public spaces.