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Kennel cough
Quick answer
Kennel cough is a highly contagious upper respiratory infection that causes a **harsh, honking cough**, often triggered by excitement or pulling on the lead. Most dogs recover with rest in one to three weeks, but **puppies, seniors, and brachycephalic breeds** can develop pneumonia — contact your vet if breathing is laboured, appetite drops, or coughing persists beyond two weeks.
Key takeaways
- Most mild cases improve within one to three weeks. Some dogs cough longer, especially if secondary infection develops or they are stressed or immunocompromised.
- Yes. It spreads through airborne droplets, shared bowls, and contact with contaminated surfaces. Isolate sick dogs until your vet says they are no longer contagious.
- True kennel cough is a canine illness. Some underlying pathogens are species-specific, though immunocompromised people should avoid close contact with coughing dogs and practise good hygiene.
The full guide
Causes, symptoms, treatment options and when to call your vet — in the complete plain-English guide.
Frequently Asked Questions
- How long does kennel cough last in dogs?
- Most mild cases improve within one to three weeks. Some dogs cough longer, especially if secondary infection develops or they are stressed or immunocompromised.
- Is kennel cough contagious to other dogs?
- Yes. It spreads through airborne droplets, shared bowls, and contact with contaminated surfaces. Isolate sick dogs until your vet says they are no longer contagious.
- Can humans catch kennel cough from dogs?
- True kennel cough is a canine illness. Some underlying pathogens are species-specific, though immunocompromised people should avoid close contact with coughing dogs and practise good hygiene.