New genetic research suggests a common Southeast Asian frog long believed to be one species could actually be six or seven distinct ones.

While working on her PhD in 1992, Karen Lips went to Las Tablas, Panama, to study the biology of a tree frog, Hyla calypso, an inch-long, spiny, bright-green creature. As she walked through transects ...

Long before winter seals the forest under ice, certain frogs begin preparing for a transformation that defies basic biology. The wood frog (Rana sylvatica), along with a few treefrog species like the ...

Preface -- General account -- Common names -- Present classifications -- Scientific name -- Specific evaluation of our North American forms -- Range -- Habitat ...

These microscopic, confocal images of a zebrafish heart, and histological slices of frog (Hyla japonica) and mouse hearts, show the different locations of the branching points of coronary arteries: in ...