Which of the following animals goes into hibernation? Frogs, bats, butterflies, or bears? The answer: all of the above! 🐸🦇🦋🐻 When it's too cold outside and food is too difficult to find, some animals go into hibernation. For instance, bears' metabolism slows down to conserve energy and in some cases their body temperatures and heart rate. To survive this prolonged deep sleep, they use up reserves of fat in their bodies. ❄ | 3M