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 ...

In a startling and highly unusual case, an 82-year-old woman in eastern China sought to relieve chronic lower back pain by swallowing live frogs, following a local folk remedy. Known only by her ...