Medically reviewed by Dr. Catherine Nicolaou, DVM.
Your dog was fine yesterday. Today he’s making a sound like he swallowed a whistle, a sharp, honking cough that comes in bursts, worse when he gets excited or pulls on the leash.
Nine times out of ten in a young, otherwise healthy dog, that’s kennel cough in dogs doing exactly what it does, and it clears up on its own within one to three weeks. But a cough doesn’t always mean kennel cough, and knowing the difference matters when the real cause is a weakening heart valve or a windpipe starting to cave in.
What kennel cough in dogs actually is
“Kennel cough” is the common name for canine infectious respiratory disease complex (CIRDC), and the name undersells it. It’s rarely one bug. Most cases involve a mix of viruses and bacteria acting together, commonly canine parainfluenza, canine adenovirus type 2, and the bacterium Bordetella bronchiseptica, sometimes with Mycoplasma along for the ride. It spreads through coughed or sneezed droplets, shared water bowls, toys, and direct nose-to-nose contact, so it moves fast anywhere dogs cluster. Symptoms usually show up 2 to 14 days after exposure, which is exactly why it is rarely obvious where a dog actually picked it up.
In India that means boarding kennels and daycare, both growing fast in the metros, plus grooming salons, dog parks, and community feeding points where street dogs and pets share the same patch of ground.
A dog left at a Bengaluru boarding facility over a long weekend and a street dog working the same lane as five others at a feeding point are exposed the same way. Your dog doesn’t need a cage to catch this.
The sound that gives it away
Classic kennel cough is dry, harsh, and sudden, often compared to a goose honk, sometimes ending in a retch or a gag like something’s stuck in the throat. It gets worse with excitement, with pressure on the throat from a collar and lead, or with a sudden change in temperature, like walking from an air-conditioned room into the heat. The giveaway: your dog is coughing, but otherwise acting completely normal, eating well, playing, tail up.
When a cough isn’t kennel cough
A handful of other conditions produce a cough that sounds similar to an untrained ear, and telling them apart changes what you do next.
Collapsing trachea: more common in small and toy breeds, middle-aged to older, often overweight. The cough is chronic, weeks to months, not days, triggered by excitement, drinking, or being picked up under the chest, and tends to be worse at night.
Heart disease: more likely in older, small-breed dogs. The cough is often worse lying down or at night, paired with tiring faster on walks than usual, and sometimes gums that look pale or bluish rather than healthy pink.
Pneumonia: the one that needs a same-day vet visit, not a wait-and-see. Fast or laboured breathing even at rest, fever, lethargy, going off food. Occasionally caused by a rare but serious bacterium, Streptococcus equi subsp. zooepidemicus, well documented in outbreaks among kennelled and shelter dogs worldwide, where a mild-looking cough can turn into severe illness within a day or two.
Something physically stuck: grass awns, seed heads, and small foreign objects can lodge in the airway, especially after a dog’s been running through long grass or scrub, and cause a cough that doesn’t fit the kennel-cough pattern and doesn’t resolve with rest.
The two-minute check that helps your vet
Before you call, do this: film 15 to 20 seconds of the cough on your phone, and count your dog’s breaths for 30 seconds while he’s asleep or fully relaxed, then double it. A resting or sleeping rate under roughly 30 breaths a minute is generally reassuring; a rate that’s consistently higher, or breathing that looks laboured even at rest, is the detail that gets you seen faster.
Note when the cough happens too: right after a boarding stay or a park visit points to kennel cough, after excitement or drinking water points more to a collapsing trachea, and at rest or lying down points more to the heart.
Is it dangerous, and how long does it actually last
For a healthy adult dog, uncomplicated kennel cough runs its course in one to three weeks without needing much beyond rest. Usually, no, it isn’t dangerous. The exceptions are unvaccinated puppies, senior dogs, and dogs with existing heart or lung disease, where a cough that starts simple can tip into secondary pneumonia. The line to watch for: a cough still going strong after two to three weeks, or one that comes with fever, lethargy, no appetite, or fast breathing at rest. That combination means it’s stopped being “just” kennel cough and needs a vet, not more patience.
What actually helps at home, and what to skip
Keep him away from other dogs for about two weeks, both for his sake and theirs, since he’s contagious before the cough even fully resolves. Swap the collar for a harness so nothing presses on an already irritated throat. Skip strenuous exercise and dog parks until the cough has cleared. A humidifier, or ten minutes sitting with him in a steamy bathroom, can loosen things up. Keep fresh water available and keep an eye on appetite.
On the honey question: a small amount can soothe an adult dog’s throat the way it does for a person, but it’s comfort, not treatment, and it does nothing to the underlying infection. Skip it for puppies under a year old, since honey can carry botulism spores that a young immune system isn’t ready for, and skip it for diabetic dogs.
Antibiotics are not automatic, and shouldn’t be. Most kennel cough cases are viral, and antibiotics do nothing for a virus. Vets generally hold them back unless there’s a fever, lethargy, or a suspected bacterial pneumonia component, and ideally that’s confirmed rather than guessed.
On cost: a vet consultation for a coughing dog typically runs somewhere in the ₹300-800 range in most Indian cities, though this varies by city and clinic.
If antibiotics or supportive medication are actually needed, add roughly ₹300-1,000 depending on the course. These are ballpark figures, not a quote, since pricing swings city to city.
Can a vaccinated dog still get kennel cough?
Yes, and that’s not a sign the vaccine failed. It lowers the odds and softens the illness, it isn’t a guarantee against every virus bundled into “kennel cough.” A vaccinated dog with a mild cough that clears in a few days is the vaccine doing exactly what it promised.
Can humans or cats catch kennel cough?
Not really. The organisms most often responsible, Bordetella bronchiseptica and canine parainfluenza, are overwhelmingly dog-specific. Human transmission is exceptionally rare and largely limited to people who are already immunocompromised, healthy adults and kids aren’t at meaningful risk. Cats can occasionally pick up Bordetella bronchiseptica from dogs, though it’s uncommon.
The science still catching up: BARDiD
Since late 2022, vets in the US started seeing an unusual number of dogs with a cough that lingered for weeks and resisted the usual treatment. In 2025, researchers gave the likely culprit a name: BARDiD, short for “bacteria associated with respiratory disease in dogs,” a newly identified organism related to a human airway pathogen discovered only in 2021. It’s still hard to study; scientists can’t yet grow it in a lab and are working from nasal swabs. Tracking so far has mostly been in the US, and there’s no confirmed India-specific data yet. It doesn’t change what you should do at home today, but it’s a useful reason not to assume every stubborn, weeks-long cough is automatically “just” kennel cough, a caution the American Veterinary Medical Association makes in its own guidance on the condition.
Keeping it out of your dog’s life in the first place
The kennel cough component is usually offered alongside your dog’s core shots, see our full dog vaccination schedule for the complete India-specific timeline. It’s worth knowing upfront that the vaccine doesn’t guarantee zero infection, it reduces how likely and how severe an infection is. Sensible extra precautions: skip nose-to-nose greetings with a visibly coughing dog at the park, don’t let your dog share water bowls with unfamiliar dogs, and ask any boarding kennel or daycare what their vaccination policy actually is before you book, not after. If your dog is showing any breathing emergency signs, see our dog first aid kit guide for what to do right now.