Each time the nice people from Houghton Mifflin Harcourt’s publicity department contact me to say that they have a new Peterson’s Field Guide soon to be released, I always reply with a note that includes the text “Western? ;-)” As nine times out of ten they’re Eastern, this has become a friendly little joke between us. However every so often a new – or updated edition of a – Western guide does make an appearance. Such was the case recently with the arrival of the new Peterson Field Guide to Western Reptiles & Amphibians, Fourth Edition.

Written by the late Robert Stebbins and Samuel McGinnis, this new Peterson Field Guide offers a thorough update of the maps and taxonomy of the 2003 Third Edition, and to the original illustrations created by Dr. Stebbins, adds 160 photographs for additional ease of species identification and reference.