Kennel cough, also known as canine infectious tracheobronchitis, is an upper respiratory infection that affects dogs. It is highly contagious and is often spread through airborne droplets produced by sneezing and coughing, as well as contact with contaminated surfaces. The most common causative agents are the bacterium Bordetella bronchiseptica, canine parainfluenza virus, and to a lesser extent, canine coronavirus. The infection can spread quickly among dogs in the close quarters of a kennel or animal shelter, hence the name "kennel cough." The primary sign of kennel cough is a dry, hacking cough, often described as a "goose honk," which can be accompanied by other symptoms such as retching, vomiting, and nasal discharge. Most cases of kennel cough are not serious and resolve on their own within 1 to 2 weeks, but some dogs may develop life-threatening complications, especially those with preexisting health issues that compromise their immune system