Glycogen is stored in animal's body in -------- and -------.

Step-by-step solution

Glycogen is a branched polymer of glucose and serves as the primary short-term energy storage molecule in animals. It is synthesized and stored mainly in the liver and the skeletal muscles. In the liver, glycogen is broken down to maintain blood glucose levels, while in muscles, it provides a quick source of energy during vigorous physical activity. Answer: Liver and Muscles