In this study we took 2921 dogs, 34% were adults and 66% of them were young. These dogs were subjected to tests for the diagnosis of diabetes mellitus, and 10 of them were positive. 34% of adult dogs were overweight and obese. All dogs were grouped according to the type of food they consumed. The percentage of obesity based on the type of food they consumed was: dry food 35%, home food 30%, mix food 25%, cans 10%. The study showed that 6 dogs were obese and diabetic, 4 dogs were diabetic but not obese.