Nick Garbutt / Sumatran pit viper (Trimeresurus sumatranus) juvenile on tree trunk, in tropical rainforest. Danum Valley, Sabah, Borneo, Malaysia.

Robert Valentic / Red-bellied Blacksnake (Pseudechis porphyriacus) basking on rock, Lerderderg Gorge, Victoria, Australia, February.

Daniel Heuclin / Sunda island pitviper (Trimeresurus insularis) in tree, Komodo Island.

Michael D. Kern / Sri Lankan Bamboo Pitviper (Trimeresurus trigonocephalus) captive, from Sri Lanka

Michael D. Kern / Bamboo pitviper, (Viridovipera stejnegeri) captive from Asia

Daniel Heuclin / Kramer's / Large Eyed Pit Viper (Cryptelytrops / Trimeresurus macrops). Captive. Endemic to South East Asia.

Daniel Heuclin / Pope's pitviper (Trimeresurus / Popeia popeorum)captive, from SE Asia

Sandesh Kadur / Large scaled pit viper (Trimeresurus macrolepis) head profile, water droplet below, Western Ghats, Southern India

Daniel Heuclin / White-lipped / Green tree viper (Cryptelytrops albolabris) captive, from SE Asia

Nick Garbutt / Pope's pit / tree viper (Trimeresurus popeorum) in lowland forest. Danum Valley, Sabah, Borneo, Malaysia

Tony Phelps / White-Lipped palm viper {Trimeresurus / Cryptelytrops albolabris} captive, from SE Asia

Tony Phelps / White lipped palm viper in tree {Trimeresurus albolabris} Thailand