- Artificial experiment [1]: no longer than 3 months (but see disclaimer) - New study [2]: 7 months (with 100% survival rate) So further study seems to be nee

- Artificial experiment [1]: no longer than 3 months (but see disclaimer) - New study [2]: 7 months (with 100% survival rate) So further study seems to be needed. [1] https://journals.biologists.com/jeb/article/216/18/3461/11609/Hibernation-physiology-freezing-adaptation-and#:~:text=none%20tolerated%20a%203-month%20exposure%2C%20although%20the%20subjects%20used%20in%20these%20trials%2C%20which%20had%20recently%20been%20frozen%20at%20%E2%88%9212%20or%20%E2%88%9216%C2%B0c%2C%20may%20have%20been%20unduly%20stressed https://journals.biologists.com/jeb/article/216/18/3461/1160... [2] https://journals.biologists.com/jeb/article/217/12/2193/12112/Wood-frog-adaptations-to-overwintering-in-Alaska#:~:text=the%20duration%20of%20freezing%20survival%20in%20wood%20frogs%20in%20interior%20alaska%20was%20much%20longer%20than%20that%20reported%20from%20other%20studies%2C%20with%20temperatures%20within%20wood%20frog%20hibernacula%20remaining%20below%20the%20freezing%20point%20for%20up%20to%20218%20days%2C%20over%207%20months%2C%20with%20100%25%20survival https://journals.biologists.com/jeb/article/217/12/2193/1211...