Jen Guyton / Ringed snail-sucker (Sibon annulatus) La Selva Biological Station, Costa Rica. Controlled conditions.

Jen Guyton / Ringed snail-sucker (Sibon annulatus) from La Selva Biological Station, Costa Rica. Controlled conditions.

Jen Guyton / Clouded snail-eater snake (Sibon nebulatus) La Selva Biological Station, Costa Rica. Controlled conditions.

Jen Guyton / Lichen-colored snail-sucker snake (Sibon longifrenis) from La Selva Biological Station, Costa Rica. Controlled conditions.

Jen Guyton / Lichen-coloured snail-sucker snake (Sibon longifrenis) La Selva Biological Station, Costa Rica.

Jen Guyton / Clouded snail-eater snake (Sibon nebulatus) at La Selva Biological Station, Costa Rica.

Jen Guyton / Clouded snail-eater (Sibon nebulatus) La Selva Biological Station, Costa Rica.

Jen Guyton / Snail-eating snake (Sibon nebulata) extracts a snail from its shell by wedging the shell in the fork of a branch and pulling at the snail's soft body. La Selva Biological Station, Costa Rica.

Alex Hyde / Cloudy Snail-eater / Clouded snake (Sibon nebulatus) Osa Peninsula, Costa Rica.

Alex Hyde / Cloudy Snail-eater / Clouded snake (Sibon nebulatus) Osa Peninsula, Costa Rica.

MYN / Andrew Snyder / Snail-eating snake (Sibon nebulata) Surama, Guyana. Meetyourneighbours.net project

MYN / Andrew Snyder / Cloudy Snail eater (Sibon nebulata) Surama, Guyana. Meetyourneighbours.net project

Claudio Contreras / Slender snail sucker snake (Sibon dimidiata) on rainforest leaf, Misol Ha cascade, Lacandon Rainforest, Mexico, December

Michael & Patricia Fogden / Red-eyed Snail-eater Snake (Sibon lamari) predating a snail, has specially adapted teeth for biting through shells, Costa Rica

Michael & Patricia Fogden / Ringed Snail-eater Snake (Sibon annulata) rainforest, Costa Rica

Michael & Patricia Fogden / Colubrid Snake (Sibon sp) predating a snail, rainforest, Costa Rica

Michael & Patricia Fogden / Colubrid Snake (Sibon sp) predating a snail, rainforest, Costa Rica

Michael & Patricia Fogden / Colubrid Snake (Sibon sp) close up, front view, rainforest, Costa Rica

Michael & Patricia Fogden / Colubrid Snake (Sibon sp) close up, rainforest, Costa Rica

Ch'ien Lee / Vieira's Snail-eating Snake (Sibon vieirai), Mashpi Amagusa Reserve, Ecuador

Piotr Naskrecki / Clouded Snake (Sibon nebulatus) feeding on snail prey, Costa Rica

Daniel Nunez / Slender snail sucker snake (Sibon dimidiatus) resting on leaf, Finca Sacmoc, Alta Verapaz, Guatemala.

Daniel Nunez / Carr's snail sucker (Sibon carri) resting on leaf, Heloderma Natural Reserve, Zacapa, Guatemala. Endemic species.

Daniel Nunez / Carr's snail sucker (Sibon carri) resting on leaf, Heloderma Natural Reserve, Zacapa, Guatemala. Endemic species.

Roman Willi / Clouded snake (Sibon nebulatus) portrait, Osa Peninsula, Costa Rica.

Emanuele Biggi / Ringed snail eater snake (Sibon annulatus) portrait, Centro Manu, Costa Rica.