On a private nature reserve in Costa Rica, Donald Varela-Soto searched for the source of a shrill frog call for six months. What he found turned out to be a new species, a tiny green tree frog that ...

Scientists have now discovered the oldest ancestor for all the Australian tree frogs, with distant links to the tree frogs of South America. Newly discovered evidence of Australia's earliest species ...

Scientists have described three new frog species that dwell exclusively in the spiky leaves of pandan trees in Madagascar’s eastern rainforests. While the frogs are new to science, locals have ...