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Both snake and weasel hibernate. Which of the following is correct?

A. They will die when temperature decreases below the critical temperature.

B. Weasel will die when temperature decreases below the critical temperature.

C. Snake will die and weasel will wake up when the temperature decreases below the critical temperature.

D. Weasel keeps low body temperature and slow heart rate during the entire period of hibernation.

I don't think any of them should die, they would have some adaptation to prevent that. So,is the answer (D) ?

What is the snake's adaptation in this situation ?

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    $\begingroup$ A relevant article $\endgroup$ Commented Jan 25, 2014 at 13:34

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Weasels don't hibernate. See http://icwdm.org/handbook/carnivor/Weasels.asp

Both will die when the temperature falls below a certain level. The difference between snakes (ectotherms) and weasels (endotherms) is that the snake's body temperature will fluctuate more, depending on the surrounding temperature.

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