Morley Read / Parrot snake (Leptophis ahaetulla) threat display, Amazon rainforest, Orellana Province, Ecuador. (non-ex)

Paul Hobson / Parrot snake (Leptophis ahaetulla) in aggressive pose with mouth open. Costa Rica.

Bence Mate / Satiny Parrot snake (Leptophis depressirostris) Santa Rita, Costa Rica.

Bence Mate / Head portrait of Satiny Parrot snake (Leptophis depressirostris) swallowing frog, Hungary, Europe

Martin Gabriel / Green parrot snake (Leptophis ahaetulla) defensive attack, Tenorio National Park, Costa Rica

Edwin Giesbers / Satiny Parrot Snake (Leptophis depressirostris) close up, Costa Rica

Edwin Giesbers / Close up of Satiny Parrot Snake (Leptophis depressibotris), Costa Rica

Edwin Giesbers / Close up of Satiny Parrot Snake (Leptophis depressirostris), Costa Rica

Claus Meyer / Parrot Snake (Leptophis ahaetulla) with mouth open in defense display, Caatinga ecosystem, Brazil

Morley Read / Slow motion clip of a Fer de Lance (Bothrops atrox) smelling with its tongue, Orellana Province, Ecuador. (non-ex)

Morley Read / Parrot snake (Leptophis ahaetulla) threat display, Amazon rainforest, Orellana Province, Ecuador. (non-ex)

Morley Read / Parrot snake (Leptophis ahaetulla), with a fly on its head, enters its mouth, Amazon rainforest, Orellana Province, Ecuador. (non-ex)