green poisonous snake, head of asian palm pit viper trimeresurus and yellow eyes disguised in stones

snake tongue green victim colubridae reptile dangerous exotic serpent tropical viper colubrid deadly hiding predator scales stripe vertebrate aggressive retreat coil reptilian venom fauna herpetology gartersnake slither snakeskin jungle trimeresurus venomous chordata albolabris cardamomensis erythrurus gramineus gumprechti insularis macrolepis macrops medoensis popeiorum rubeus stejnegeri