What happens before hibernation?

Before hibernation, animals typically undergo a period of preparation that includes eating more food to build up fat reserves, which will sustain them during the dormant period. They may also seek out or create a secure den or burrow to provide shelter and protection. Physiologically, their bodies begin to slow down, with a decrease in metabolic rate, heart rate, and body temperature as they approach hibernation. Additionally, some species may exhibit behavioral changes, such as increased sleepiness or reduced activity levels.