Daniel Heuclin / Coastal Rubber Boa (Charina bottae) head emerging from sand. Controlled conditions. Endemic to Western USA and South Western Canada.

Daniel Heuclin / Coastal Rubber Boa (Charina bottae). Controlled conditions. Endemic to Western USA and South Western Canada.

Daniel Heuclin / Coastal Rubber Boa (Charina bottae) in defensive posture. Controlled conditions. Endemic to Western USA and South Western Canada.

Daniel Heuclin / Coastal Rubber Boa (Charina bottae) head and tail. Controlled conditions. Endemic to Western USA and South Western Canada.

Daniel Heuclin / Rosy Boa (Lichanura / Charina trivirgata) forming a figure eight on sand. Controlled conditions. Western USA, November.

John Cancalosi / Northern Rubber Boa (Charina bottae) Oregon, USA, captive

John Cancalosi / Rubber Boa (Charina bottae) coiled within itself, Oregon, USA, captive

John Cancalosi / Rubber Boa (Charina bottae) adult with newborn young, Oregon, USA, captive

Heidi & Hans-Juergen Koch / Calabar Ground Boa (Charina reinhardtii) as a defensive behavior, coils body into a ball, head and tail look alike, native to West Africa

Doug Wechsler / Rubber boa {Charina bottae} Washington USA. Head resembles tail