The aim of this study was to evaluate extrinsic and intrinsic risk factors and the prevalence of periodontal disease in dogs and cats. We evaluated 75 dogs and 30 cats with no predilection for breed, sex, age or weight. The results revealed that periodontal disease was highly prevalent in the animals evaluated, the most common condition being dental calculus, followed by gingivitis and grade I periodontal disease. more adequate preventive guidance, an early diagnosis and an appropriate therapeutic recommendation.