Wood frogs — Lithobates sylvaticus, also known as Rana sylvatica — live farther north than any other amphibian, even beyond ...
Long before winter seals the forest under ice, certain frogs begin preparing for a transformation that defies basic biology.
How does a thin-skinned, cold-blooded creature survive a below freezing Colorado winter without a fur coat or a ticket south?
The animal kingdom is full of fascinating tricks for enduring sub-freezing temperatures. Birds, for example, often just take ...