Revealing its full length while on a branch positioned to strike anytime during the afternoon in the dark of the forest at a stream, Vogel's Pit Viper Trimeresurus vogeli, Thailand

vogels pit viper trimeresurus vogeli trees habitat natural habitat prey predator wildlife nature forest jungle rainforest national park khao yai thailand viper reptilia squamata viperidae trimeresurus vogeli savanna sexual dimorphism venomous reptiles green leaves camouflage head scales colubroides fangs venom viperids keeled scales ambush predator ophidiophobia tropical snakes pit viper plants stream dark ground