Kennel Cough is a extremely contagious respiratory disease in dogs, known scientifically as canine infectious tracheobronchitis. It is considered to be one of the most prevalent infectious respiratory diseases in dogs. Kennel cough most commonly occurs where groups of dogs are congregated together, such as doggie day-cares, pet shops, veterinary hospitals, grooming parlors, parks, shelters, and kennels (hence the name kennel cough!). It is found worldwide, and can affect dogs of any age and breed. It most commonly affects dogs in summer and fall, but can occur any time of year. Kennel cough can become serious and even lead to pneumonia if left untreated, especially in young puppies. Therefore it is best to schedule a physical exam with your veterinarian if you are concerned about kennel cough.