How and why do animals hibernate in the winter?
Animals such as some bears, squirrels, and hummingbirds hibernate in the winter. Hibernation is a process that allows certain animals to drastically reduce their heart rate and thus their body’s energy needs in harsh conditions. When temperatures are frigid and food is scarce, these animals hibernate (remain dormant/inactive) to conserve energy instead of searching for food for days and possibly starving or freezing to death. Squirrels can wake up every 4 days or so to eat and take a potty break, whereas black bears can hibernate for up to 7 months without food, water, or relieving themselves!
