Kennel cough is a highly contagious respiratory infection that affects dogs. It is caused by a combination of viruses and bacteria, primarily the Bordetella bronchiseptica bacterium. Symptoms include a persistent dry cough, sneezing, and nasal discharge. While it can be uncomfortable, most dogs recover without serious complications. The infection spreads easily in places where dogs gather, such as dog parks, boarding facilities, and grooming salons. Vaccination can help protect against some of the pathogens that cause kennel cough, making it important for dog owners to keep their pets up to date on vaccinations.