Twelve dynamic chapters related to amphibian decline are given; Viral and Bacterial diseases of amphibians; Fungal diseases; Factors affecting Interspecific variation in susceptibility to disease; Digenitic Trematodes and their relationship to amphibian declines and deformities; Amphibian Malformations; Ultra Violet-B Radiation; Pollution; Impact of Reactive Nitrogen; Evaluating the Impact of Pesticides; Endocrine disrupting chemicals; Role of Petrochemicals and heavy metals; Acidification and its affects; Climatic Change.