Consider the following:
The phenomenon of hibernation can be observed in which of the above kinds of animals?
[UPSC Civil Services Exam – 2014 Prelims]
(a) 1 and 2 only
(b) 2 only
(c) 1, 2 and 3
(d) Hibernation cannot be observed in any of the above
Hibernation is a way for many creatures – from butterflies to bats – to survive cold, dark winters without having to forage for food or migrate to somewhere warmer. Instead, they turn down their metabolisms to save energy.