Throughout much of the world, frog populations are declining and some species are disappearing totally. In Australia, several species have become extinct in the past 25 years. This revised and updated guide provides concise accounts of all the known frogs of Australia, including the 230 species within the five native frog families: Hylidae, Limnodynastidae, Microhylidae, Myobatrachidae, and Ranidae. Also included are the introduced Cane Toad and nine 'stowaway' species that have arrived in Australia.