The wood frog (Lithobates sylvaticus or Rana sylvatica) has a broad distribution over North America, extending from the Boreal forest of Canada and Alaska to the southern Appalachians. Portrait macro© ...

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.

Add Yahoo as a preferred source to see more of our stories on Google. The wood frog (Lithobates sylvaticus or Rana sylvatica) has a broad distribution over North America, extending from the Boreal ...

Alaskan wood frogs survive freezing temperatures by entering states of suspended animation. They do this by undergoing a controlled body freeze, spreading glucose through their bodies, and shutting ...