There are three orders of amphibians in the world: Anura, Caudata, and Gymnophiona. The AmphibiaWeb database currently contains 6,317 amphibian species (May 9, 2008) , of which 5,576 are Anura (frogs and toads), 566 are Caudata (newts and salamanders), and 175 are Gymnophiona (caecilians). The numbers of species have grown rapidly. Since 1985 the total number of recognized species has increased by nearly 35%.

Anura 88% Caudata 9% Gymnophiona 3%