1 out of 3 dogs are overweight. For example, 3 lb of extra weight on a 30 lb dog constitutes a 10% increase in body weight. This excess weight can contribute to health problems and a shortened lifespan in medium dogs. MEDIUM Weight Care helps to minimize the accumulation of excess fat through a low fat level (9%) and a low caloric content. Supplemental Lcarnitine helps to burn excess fat stored in the body, promoting a healthy body weight.