A beautiful and comprehensive photographic guide that features all of the frogs of North America and includes an expert audio recording of their calls. From the olive-and-black Pig Frog, which gets its name from its low-pitched, piglike grunt, to the X-marked and familiar-sounding Spring Peeper, frogs and toads are fascinating to casual nature lovers as well as expert herpetologists. Covering all 101 species in the United States and Canada, this book...