Obesity is a common problem in pets, constantly associated with metabolic disorders that affect glucose, cholesterol and triglycerides, compromising the longevity of animals. The humanization of dogs and cats, adopted by many owners, has led to an increasing risk of overfeeding and, together with idleness due to reduced space, can result in obesity. Research shows that pets' diet is influenced by the behavior and lifestyle of owners, who often do not have adequate knowledge about animal nutrition, therefore, their awareness of the importance of correct nutritional management is essential. Aiming to address these issues, the Nutripet Unifavip nutritional calculator was created, developed during the duration of the Institutional Scientific Initiation Scholarship Program (PIBIC) by UNIFAVIP | Wyden in the years 2023 to 2024.