What is it called when Animals Store their excess energy in this form they and can use of storing later on if dont have enough energy?

The excess energy in animals is stored in the form of fat. Fat is a type of lipid that consists of fatty acids and glycerol. It is an efficient way to store energy because it is compact and can provide a large amount of energy when needed. When an animal has excess energy, it will store it as fat. This fat can then be used for energy when the animal does not have enough food or if it is sick or injured.