Head extended down as it is moving and showing its tongue tasting the air around it, White-lipped Pit Viper Trimeresurus albolabris, Thailand

reptiles vipers whitelipped pit viper trimeresurus albolabris trimeresurus venomous pit viper arboreal kaeng krachan squamata reptilia predators nocturnal herping herpetology animals wildlife nature endemic green slither toungue scales venin bokeh southeast asia fangs venom tree bamboo genus rainforest jungle habitat natural forest snakes wild branch twig