Bordetella bronchiseptica is a bacterium that primarily affects the respiratory system of animals, particularly dogs and cats. It is known to cause kennel cough, a contagious respiratory disease characterized by a persistent cough and other respiratory symptoms. This bacterium can also infect other species, including pigs and rabbits. Transmission occurs through respiratory droplets, making close contact between animals a significant risk factor. Vaccines are available for dogs to help prevent infection, and good hygiene practices can reduce the spread of the bacterium in environments like animal shelters and kennels.