The wood frog can survive being frozen solid during winter, with up to 70% of its body water turning to ice, then thaw and resume normal activity.
Notes on verification
Extensively studied in cryobiology research and documented in peer-reviewed physiological journals [2026-08-28 re-verified orphan: promoted with 4 independent source(s)] [2026-08-29 audit re-verified: 2 independent source(s)]
Sources
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8067143/ (reverify-primary)
- https://www.discoverwildcare.com/animal-facts/amphibians/wood-frog (corroboration)
- https://www.nationalgeographic.com/animals/article/animals-freeze-then-thaw-explained (corroboration)
- https://www.audubon.org/news/frogs-freeze-survive-alaskan-winter (corroboration)
- https://www.sciencedirect.com/science/article/abs/pii/S1096495922000355 (audit-corroboration)
- https://www.forestsociety.org/something-wild/frozen-wood-frogs-thaw-out (audit-corroboration)