The White-lipped Pit Viper occurs in forest and open grassland as well as urban areas. It is nocturnal, and when aroused is quick to bite though this is seldom fatal. By day it is less aggressive. It feeds on a variety of other vertebrates including small birds, rodents, frogs and lizards.

The dorsal side is green, the ventral side yellow and the tail brownish. The scales are strongly keeled. Males have a thin white stripe along the body. The head is a triangular shape typical of pit vipers.

The species ranges from India through Burma, Thailand, Indochina and southern China to Malaysia and many parts of western Indonesia including Borneo, Sumatra and Java.
 

Figs 1 to 3 : Three images of a male White-lipped Pit Viper from Khao Yai National Park, Thailand.  The snake was found in low vegetation next to a mountain stream at an elevation of around 800 metres.
 

Family : CROTALIDAE
Species : Cryptelytrops albolabris
Maximum Size : 100 cm

References : H1, H3