Kennel cough in dogs
Kennel cough (infectious tracheobronchitis) is a contagious airway infection caused by viruses and bacteria such as Bordetella. It spreads where dogs gather.
Last updated: October 2026 · 2 sources · see sources
Signs to watch for
- Harsh, honking cough
- Gagging
- Mild runny nose
- Most dogs otherwise feel fine
Trouble breathing, collapse, repeated vomiting, not peeing, or a seizure that lasts more than a few minutes needs a vet right away. See when to see a vet.
How vets diagnose it
Vets usually diagnose it from the history and exam. X-rays or tests are used if pneumonia is suspected. [2]
How it's treated
Mild cases often get better on their own with rest. Some dogs get cough medicine or antibiotics. [2]
Medicines your vet may mention: Doxycycline. We don't list doses; your vet will decide what fits your pet.
What it costs to diagnose and manage
These are typical US ranges from the sources listed. Your pet's costs depend on how severe things are, the tests your vet recommends, your pet's size and where you live. Ask your vet for a written estimate.
Outlook
Most dogs recover in one to three weeks. Puppies and older dogs need closer watching for pneumonia. [2]
Common questions
What is kennel cough in dogs?
Kennel cough (infectious tracheobronchitis) is a contagious airway infection caused by viruses and bacteria such as Bordetella. It spreads where dogs gather.
What are the signs of kennel cough?
Common signs include: harsh, honking cough, gagging, mild runny nose, most dogs otherwise feel fine.
How do vets diagnose kennel cough?
Vets usually diagnose it from the history and exam. X-rays or tests are used if pneumonia is suspected.
How is kennel cough treated?
Mild cases often get better on their own with rest. Some dogs get cough medicine or antibiotics.
How much does kennel cough cost to treat?
Diagnosis (exam and tests): $50–$100; Treatment: $0–$500. Costs vary with severity, tests, your pet's size and where you live.
Related
This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.