The dictionary is a compilation of clear, concise and informative definitions of the characteristic vocabulary commonly encountered and used by herpetologists when discussing, reading, or writing about reptiles and amphibians. It is intended for all those who have an interest in these animals, from the amateur hobbyist who may find himself faced with what can be a rather intimidating scientific term or technical expression, to the trained zoologist who may sometimes have doubts over the exact meaning of a particular term. It will, it is hoped, not only be a useful source of reference to all who are either actively or passively involved in some aspects of herpetology whether they be keepers, curators, breeders, researchers, teachers or students, but an interesting read as well.