Frogs, toads and salamanders are all types of amphibians. Amphibians normally hatch from eggs laid in or near water and began life as aquatic larvae with gills. During adulthood, amphibians live mostly on land, often returning to the water to breed and hibernate.
Historically, frogs and other amphibians are survivors. They lived through the last two extinction episodes, including the end of dinosaurs.
At the 1989 First World Congress of Herpetology, scientists made a startling discovery and determined that amphibians were declining and disappearing all over the planet.
In addition to widespread decline, there has been a high rate of amphibian deformities. Deformed amphibians are not a new phenomenon, but reports were not common until recently. Since 1995, reports have become increasingly common, and a number of scientists are looking for the cause.
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