An interpretive naturalist, writer, educator and reptile specialist from Bend, Oregon, Alan St. John has crafted a richly photographed guide to the reptiles, snakes and turtles found in the Pacific Northwest. Each of the book's 44 accounts features photographs of the animal, as well as range maps and notes on identification, variation, distribution, habitat, behavior and similar species. The guide also has a strongly personal and accessible quality through St. John's field notes of his own encounters with each of the featured species.

Oregon native Alan St. John is a freelance interpretive naturalist who uses writing, photography, pen-and-ink drawings, and colour paintings to teach about the natural world. He is the author of Reptiles of the Northwest from Lone Pine Publishing as well as a book on eastern Oregon. His work has appeared in such major publications as National Geographic, Natural History, Nature Conservancy, and the New York Times. In the past, he has also worked as a reptile keeper and has conducted extensive reptile and amphibian field surveys for federal and state governments.

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