Table of contents : Safety for herptiles and humans -- pt. I. The ecological setting -- Topographic features and localities -- Climate -- Terrestrial environments -- Aquatic environments -- Ecological change -- pt. II. Amphibians and reptiles -- Introduction to the species accounts -- Amphibians -- Reptiles -- App. A. Scientific names of plants and animals -- App. B. Photographic stations -- App. C. English to metric unit conversion -- App. D. Sabino Creek timeline -- App. E. Checklist of amphibians and reptiles.