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The first complete field guide to the exotic amphibians and reptiles established in the continental United States and Hawai'i, this volume covers 74 species that are not native to the country and 29 species that are native but occur beyond their original geographic range. Dispersed from their former habitats by human activity, many of these species are invasive in their new environments, causing ecological or economic harm.  Ideal for naturalists of all levels, Exotic Amphibians and Reptiles of the United States details each species' taxonomy, distribution, history, and ecology and portrays each one with vibrant photographs. Drawing on county-level distribution maps from 2,908 published records, this guide provides an in-depth understanding of local factors that drive the success of exotic species. It connects species-specific information to conservation issues as it explores human causes of exotic and invasive establishment. The book also includes eight invited essays which provide regional perspectives on scientific, economic, and management-related aspects of this phenomenon.  As ecological pressures on native species and habitats increase, understanding the histories and roles of exotic species is becoming more and more important for conservation efforts. Providing practical identification skills and an awareness of the environmental impacts of these amphibians and reptiles, this indispensable guide equips readers to confront the unusual biodiversity crisis of exotic species.

Finding a salamander in the woodlands rates as one of the most enjoyable surprises of an early morning hike. Active mainly at night, these secretive, shiny, lizardlike amphibians often glow like jewels when found under the logs or rocks that many prefer. This colorful addition to Iowa's popular series of laminated guides-the twenty-fifth in the series-will inform both amateur and professional naturalists about twenty-five species of salamanders found in the Upper Midwest states of Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio, South Dakota, North Dakota, Kansas, Nebraska, Iowa, and Missouri. Common mudpuppies and lesser sirens spend their entire lives in water, never losing the gills that they developed as larvae; the lungless four-toed salamander distracts predators by detaching its tail; the eastern newt discourages predators by secreting poisonous chemicals from its skin; the flat-bodied hellbender, which can reach twenty-nine inches in length, breathes by absorbing oxygen through the folds of its skin. These, plus the well-named slimy, zigzag, tiger, and other salamanders in this guide, are now threatened by loss of habitat, pollution, and a deadly fungus. Terry VanDeWalle provides a complete description of each species as well as distinguishing characteristics for twenty-one subspecies, from the striking orange and yellow spots of the spotted salamander to the lichenlike patches of the green salamander to the prominent rounded head of the mole salamander. He also includes information about the salamanders' range and habitat preferences, from twilight zones of limestone caves and crevices to seepages and spring-fed bogs. His comparisons of similar species and his comprehensive key are most helpful for identifying individuals in the field. Superb photographs by Suzanne Collins make this new guide the perfect companion for outdoor expeditions in all kinds of moist environments.

From the rare and docile massasauga, which relies on camouflage to remain unnoticed, to the more familiar bullsnake, which defends itself by hissing loudly and vibrating its tail from an S-shaped striking position, to the eastern racer, often seen crawling at more than three miles an hour during daytime, snakes are beautiful animals with habits both fascinating and beneficial to humans. Their relatives the lizards, most of which are more easily seen and identified, exhibit similarly fascinating behavior. This colorful addition to our series of laminated guides informs both amateur and professional herpetologists about twenty-seven species of snakes and six species of lizards in the Upper Midwest states of Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio, South Dakota, North Dakota, Kansas, Nebraska, Iowa, and Missouri. Terry VanDeWalle provides a complete description of each species, both adult and young, as well as distinguishing characteristics for thirty-two subspecies of snakes and two subspecies of lizards: length, color, head and neck patterns, scales, and so on. Also included is information about habitat preferences: forests, wet meadows, and sand prairies, for example. Most helpful for identifying snakes and lizards in the field are his comparisons of similar species and his comprehensive key. Superb photographs by Suzanne Collins of adult and, when needed for identification, young snakes and lizards make this guide the perfect companion for hikers in all kinds of environments whenever a snake ripples across your path or a lizard darts into the underbrush.

In this book, we provide information on the identification, history of introduction, geographic ranges, and ecology of exotic species of amphibians and non-avian reptiles established in the continental United States and Hawai‘i. Our goal is to provide an up to date documentation of the exotic herpetofauna as a tool for management professionals, researchers, citizen scientists, and naturalists throughout the country who need or want to track, understand, and manage this segment of the biota. We undertook this endeavor because the topic of exotic species is important, and documentation of the established species is timely. Exotic species constitute a worldwide phenomenon,