Some animals hibernate over the winter, going into a very deep sleep. Hibernating animals usually retreat to a den, a burrow, or a hollow log for protection and shelter. During "true hibernation," the animal's body temperature drops, and its rate of breathing slows down. These hibernating animals are very difficult to awaken.
Most animals will eat large amounts of food before hibernating, adding body fat that will nourish them during the winter. Occasionally, hibernating animals will awaken periodically during the winter to eat. When most hibernating animals awaken in the spring, they are very hungry.
Some of the animals listed below are not "true hibernators," but they do become dormant over winter or go into diapause (a suspended state that some insects enter during cold, short days). For example, during cold winter months, some bears go into a dormant state in which their heart rate is extremely low, their body temperature is relatively high, they neither eat nor release bodily waste, and they can be roused (unlike "true hibernators"). In older scientific literature, hibernation used to refer only to low-body-temperature winter dormancy, but now that much more is known about this dormancy phase, some bears (like the black bear) are considered to be extremely efficient hibernators (some biologists refer to these animals as "super hibernators")
Some animals hibernate over the winter, going into a very deep sleep. Hibernating animals usually retreat to a den, a burrow, or a hollow log for protection and shelter. During "true hibernation," the animal's body temperature drops, and its rate of breathing slows down. These hibernating animals are very difficult to awaken.Most animals will eat large amounts of food before hibernating, adding body fat that will nourish them during the winter. Occasionally, hibernating animals will awaken periodically during the winter to eat. When most hibernating animals awaken in the spring, they are very hungry.Some of the animals listed below are not "true hibernators," but they do become dormant over winter or go into diapause (a suspended state that some insects enter during cold, short days). For example, during cold winter months, some bears go into a dormant state in which their heart rate is extremely low, their body temperature is relatively high, they neither eat nor release bodily waste, and they can be roused (unlike "true hibernators"). In older scientific literature, hibernation used to refer only to low-body-temperature winter dormancy, but now that much more is known about this dormancy phase, some bears (like the black bear) are considered to be extremely efficient hibernators (some biologists refer to these animals as "super hibernators")
การแปล กรุณารอสักครู่..
