Wood frogs are highly dependent on environmental conditions to determine whether they are active. After fattening up during the summer, wood frogs enter brumation in the fall as temperatures cool.

Their staccato voices can make a muskeg bog as loud as a city street, though most are so small they could sit in a coffee cup without scraping their noses. They surprise hikers, who notice them ...

Across the forests of North America, from the eastern woodlands up into the far north, a small brown amphibian performs a feat that would kill almost any other animal. As winter closes in, the wood ...

(Editor’s note: This article was originally published 30 years ago, on Aug. 7, 1996. Brian Barnes and author Ned Rozell have since retired from the University of Alaska Fairbanks, and scientists now ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. This voice experience is generated by AI. Learn more. This ...

Add Yahoo as a preferred source to see more of our stories on Google. A brown wood frog sits among dried oak leaves and melting snow, its golden eyes reflecting the light.© A-Z Animals The post The ...

Note: This article was originally published 30 years ago, on Aug. 7, 1996. Brian Barnes and author Ned Rozell have since retired from the University of Alaska Fairbanks, and scientists now know that ...

Wood frogs can freeze up to 65% of the water in their bodies during brumation and still survive. Brumation can last between four and seven months, depending on the temperatures. Wood frogs are the ...