Montana winters are no joke—but at least we are not freezing solid and waking up eight months later like it’s no big deal. Then again, that might actually sound appealing to some folks. And that is exactly what the wood frog does. Found across much of North America, including Alaska and Canada, and possibly even in Montana’s Bighorn or Purcell Mountains, these amphibians take winter survival to a frosty new level. Instead of hibernating underwater like their frog cousins, wood frogs bury themselves in forest floor leaf litter, freeze solid (no heartbeat, no breathing, actual ice in the eyes), and somehow defrost and hop away come spring.
According to the National Park Service, glucose floods their bodies before freezing, acting like natural antifreeze, similar to the blood sugar in humans. Scientists are fascinated not just because it is something from a science fiction movie, but because it could unlock new breakthroughs in diabetes treatment, organ preservation, and how to restart the heart after it has stopped for months. Pretty crazy.
Important note: The wood frog hasn’t been officially documented in Montana, but it may inhabit remote corners of the Bighorn Mountains (Bighorn County) or Purcell Mountains (Lincoln County). If you hear a strange duck-like quack near a meltwater pond and spot a frog with a dark mask around its eyes to its eardrums, and a white or cream underside with prominent ridges on its back, you might have met a Montana wood frog. They might just be the toughest cold-blooded Montanans, if they are actually here. (Source info: Montana National Heritage Program)
