In recent years, the tendency of raising dogs as companion animals has increased in urban and semi-urban settings. Amongst other pathogens viz virus, protozoa, dogs are highly susceptible to diseases of bacterial origin. Bacterial infections in dog causes wide range of illness, ranging from self-limited skin conditions to life-threatening systemic diseases. Some diseases such as brucellosis, leptospirosis, tuberculosis, salmonellosis, and bordetellosis will have a significant influence on the economic status and livelihood of pet owner. These bacterial infections, albeit lethal, can be avoided if intervened earlier, and their impact on humans can be reduced to a greater extent. Here, we reviewed common bacterial diseases of dog and discussed disease etiology, clinical signs, diagnosis, treatment and zoonotic potential. Raising awareness and continuing to educate veterinarians and pet owners about companion animal diseases would not only limit transmission risk but also improve animal as well human health.