The Genus Diadophis is a group of small, non-venomous snakes found throughout North America. These reptiles are commonly known as ring-necked snakes due to the characteristic collar-like markings on their necks. While this is their most commonly recognized name, there are other synonyms used to refer to this genus, including Diadophis, Diadophis punctatus, and Diadophis punctatus arnyi. The varying names originated from the differences in classification by different scientific communities and taxonomists. Regardless of the name, all species within the genus, including the southern, Mississippi, and Arizona ring-necked snake, possess unique characteristics and fascinating behaviors that make them an important part of North America's ecosystem.