Duncan Murrell / Mangrove snake (Boiga dendrophila) in the Puerto Princesa Subterranean River National Park, UNESCO World Heritage Site in Palawan, the Philipines.

Jen Guyton / Cat-eyed snake (Leptodeira septentrionalis) from La Selva Biological Station, Costa Rica. Controlled conditions.

Jen Guyton / Cat-eyed snake (Leptodeira septentrionalis) on branch with the eggs of a Parachuting red-eyed tree frog (Agalychnis saltator). La Selva Biological Station, Costa Rica,

Jen Guyton / Cat-eyed snake (Leptodeira septentrionalis) from La Selva Biological Station, Costa Rica. Photographed in a studio.

Jiri Lochman / Brown tree snake (Boiga irregularis), Wallamans Falls, Girringun National Park, Wet Tropics of Queensland UNESCO Natural World Heritage Site, Queensland, Australia.

Nick Hawkins / Banded cat-eye snake (Leptodeira annulata) lowland rainforests,Southeastern Nicaragua. August.

Chien Lee / Malagasy Cat-eyed Snake (Madagascarophis colubrinus), Bekopaka, Madagascar

Nick Garbutt / Colubrid snake (Madagascariophis sp.) endemic to Madagascar eating a small Warty chameleon (Furcifer verrucosus). Transition forest area, Andohahela National Park, southern Madagascar.

Nick Hawkins / Cat-eyed snake (Leptodeira septentrionalis) predating Olive snouted treefrog (Scinax elaechroa) in Tortuguero National Park, Costa Rica. November 2013.

Alex Hyde / Northern Cat-eyed snake (Leptodeira septentrionalis) note the mites clustered on its head. Osa Peninsula, Costa Rica.

Chien Lee / Malagasy Cat-eyed Snake (Madagascarophis colubrinus), Masoala National Park, Antsiranana, Madagascar

Daniel Heuclin / Green rat snake (Boiga cyanea) in branches, captive, occurs in South East Asia. Venomous species.