Frogs

Declines in several amphibian species have been studied for over 20 years. More recent concern about deformed frogs arose with the discovery of large numbers of deformed leopard frogs in Minnesota in 1995, however, scientists agree that deformities are...
There does not appear to be one 'smoking gun'; numerous environmental factors are probably responsible for the declines and deformities. Limited research findings and anecdotal information suggest several possible causes, including habitat loss,...
Multiple limbs, missing limbs, and facial abnormalities are the main developmental malformations seen. Malformed amphibians are now documented in 44 states, in 38 species of frogs and 19 species of toads, with estimates of deformities as high as 60...
In response to indications of worldwide declines in amphibian populations, the President and Congress directed Interior Department agencies to initiate a national program of amphibian monitoring, research, and conservation. There is an urgent need to...
Learn more:Amphibian Research and Monitoring InitiativeUSGS National Wildlife Health Center: Amphibian Malformations and DeclinesUSGS Western Ecological Research Center: Amphibian Research and MonitoringField Guide to Malformations of Frogs and Toads