The way fat cats eat is actually similar to that of people. If they are fat, they can control their caloric intake and make their consumption higher than their intake. Then they can lose weight. Therefore, it is best to feed controllable foods, such as cat food. Food generally has recommended feeding amounts (it is also recommended to use cat food with a fat content of about 15%, and the energy intake can be lower, such as Sakimoto). Feed regularly and quantitatively every day, eat smaller meals more often, and do more exercise. It will be effective if you persist for a long time.