Michael & Patricia Fogden / Oriental Whip Snake (Ahaetulla prasina) camouflaged among vines in the rainforest, southeast Asia

Dong Lei / Asian vine snake (Ahaetulla prasina) in tree. Gaoligong Mountain National Nature Reserve, Yunnan Province, China.

Dong Lei / Asian vine snake (Ahaetulla prasina) in tree. Gaoligong Mountain National Nature Reserve, Yunnan Province, China.

Duncan Murrell / Green vine snake (Ahaetulla nasuta), Sinharaja Forest Reserve, Unesco Biosphere Reserve and World Heritage Site, Sri Lanka. The green vine snake changes from pure green to chequered markings when it f...

Yashpal Rathore / Green vine snake (Aheatulla nasuta), Agumbe, Karnataka, Western Ghats, India.

Yashpal Rathore / Green vine snake (Aheatulla nasuta), Agumbe, Karnataka, India.

Yashpal Rathore / Green vine snake (Aheatulla nasuta), Agumbe, Karnataka

Matthew Maran / Oriental whip snake (Ahaetulla prasina) Khao Yai National Park, Thailand.

Paul Williams / Man holding juvenile vine snake (Ahaetulla nasuta), Agumbe, Thirthahalli taluk, Malnad, Karnataka, India, July.

Michael D. Kern / Long nosed tree snake / Asian vine snake (Ahaetulla prasina) captive, from Asia

Michael D. Kern / Asian vine / Oriental whip snake (Ahaetulla prasina) captive, from Asia

Mark Moffett / Vine Snake and herpetologist Ted Papenfuss, Tam Dao National Park, Vietnam