MYN / JP Lawrence / Dusky pygmy rattlesnake (Sistrurus miliarius barbouri) Apalachicola National Forest, Florida, USA, September. Meetyourneighbours.net project

Daniel Heuclin / Desert massasauga snake (Sistrurus catenatus edwarsii) in desert, West Texas, USA, September.

Pete Oxford / Pygmy rattlesnake (Sistrurus miliarius) Northern Georgia, USA, July. Captive, endemic to the USA.

Todd Pusser / Carolina pygmy rattlesnake {Sistrurus miliaris miliaris} North Carolina, USA

Mary McDonald / Western Massasauga pygmy rattlesnake {Sisturus catenatus tergeminus} Texas, USA. Captive

Barry Mansell / Carolina pygmy rattlesnake, red phase {Sistrurus miliarus miliarus} North Carolina, US

Barry Mansell / Western massasauga (Sistrurus catenatus) rattlesnake coiled on sand with head raised, Arizona, USA.