Wood frogs — Lithobates sylvaticus, also known as Rana sylvatica — live farther north than any other amphibian, even beyond the Arctic Circle. Unlike most frogs, they don’t overwinter underwater. They ...

The animal kingdom is full of fascinating tricks for enduring sub-freezing temperatures. Birds, for example, often just take ...

According to a study led by Don Larson of the University of Alaska Fairbanks, wood frogs (Lithobates sylvaticus) freeze up to 60 percent of their bodies during the long and extremely cold Alaskan ...

The next time you declare that you are “freezing to death,” spare a thought for the wood frog who gets so cold in winter that ...

Wood frogs (Rana sylvatica) exhibit an extraordinary capacity for freeze tolerance, an adaptation that enables survival despite the conversion of up to 65–70% of their total body water into ...

Ever notice during the winter the lack of bugs, spiders and even amphibians? Where do they all go? The answer might surprise you. A variety of frogs live in the central and eastern U.S., including the ...

Long before winter seals the forest under ice, certain frogs begin preparing for a transformation that defies basic biology.

Imagine disliking winter so much that you appear to die when it begins, only to come back to life in the spring. That’s essentially what the incredible wood frog does (well, almost) to survive the ...

The North American amphibian, wood frogs, Rana sylvatica are the most studied anuran to comprehend vertebrate freeze tolerance. Multiple adaptations support their survival in frigid temperatures ...

As winter swoops over the world, wrapping the days in mist and hardening the ground beneath a layer of frost, people retreat indoors to snuggle into cozy blankets. With heaters humming in the ...