Andrew Snyder / Rainbow boa (Epicrates cenchria showing iridescence on head, Iwokrama, Guyana.

Lucas Bustamante / Rainbow boa (Epicrates cenchria) wound round branch over water, Tambopata, Madre de Dios, Peru.

Michael D. Kern / Rainbow boa (Epicrates cenchria cenchria) captive. Small repro only

Pete Oxford / Rainbow boa (Epicrates cenchria cenchria) juvenile, Amazon, Ecuador. Captive, occurs in Central and South America.

MYN / Andrew Snyder / Brazilian Rainbow boa (Epicrates cenchria), Berbice River, Guyana, September. Meetyourneighbours.net project.

MYN / Andrew Snyder / Brazilian Rainbow boa (Epicrates cenchria), Berbice River, Guyana, September. Meetyourneighbours.net project.

Rod Williams / Rainbow boa (Epicrates cenchris cenchris) head portrait. Captive, occurs Brazil.

Rod Williams / Rainbow boa {Epicrates cenchris cenchris} male, captive, from Brazil

Rod Williams / Rainbow boa {Epicrates cenchris} female, captive, from South America

Nick Gordon / Rainbow boa coiled around tree (Epicrates cenchris) Amazonia, Brazil

Miles Barton / Newborn Brazilian rainbow boa (Epicrates cenchris cenchris) Brazil, South America

John Cancalosi / Rainbow boa wrapped around tree {Epicrates cenchris} Rainforest, Amazon Basin, Peru