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

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 ...

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

In 1981 an epidemic among larval amphibians caused by the bacterium Aeromonas hydrophila extirpated the larval population of Rana sylvatica in a Rhode Island vernal-autumnal pond and in enclosures ...

A plan to reintroduce three tiny frog species to the UK has been given £15,000 by a rewilding charity. The hope is that the amphibians will thrive at the West Acre estate, near King's Lynn, Norfolk ...

Three species of frog will get new homes on the Norfolk estate A plan to reintroduce three tiny frog species to the UK has been given £15,000 by a rewilding charity. The hope is that the amphibians ...

It is often proposed that the morphometric shape of animals often evolves as a correlated response to selection on life-history traits such as whole-body growth and differentiation rates. However, ...

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 ...

Any habitat is open for wood frogs." The farther north wood frogs get, the more limited the season to do everything they need to be a frog -- breeding, developing and then preparing for winter. Wood ...

One of Europe's most common backyard frogs has been keeping a secret that, despite centuries of study and thousands of published papers, has only now been discovered in ponds in the Pyrenees.