Dog’s mouth is prone to infections that cause bad breath and odor. The most common infection is the periodontal disease which affects 75% of dogs of 2 years of age and above. Without any intervention, the disease can spread past the oral cavity and may affect other organs like the kidney, heart, and liver, if not treated properly. Periodontal therapy intends to reestablish oral health and treat the infection causing pain, bone loss, and organ damage. To prevent the recurrence of infection, oral health should be maintained by periodontal therapy and home dental care.