Confidence votes 46.8K. I was born a Catholic and have never wavered in my faith in over 70 years. I had 12 years of Catholic education in my youth-both primary and secondary schools.
The carbohydrate energy storage molecule of animals is glycogen.  Glycogen is a substance deposited in bodily tissues as a store of  carbohydrates.
As mentioned, polysaccharides can be used for energy storage. Typically, storage takes the form of starch in both plants and animals. A starch is a chain of glucose molecules that usually takes a linear form. In plants the common storage starch is amylose; in animals the common storage starch is glycogen.