male trimeresurus (parias) hageni's viper hagen in a steady attacking stance against a natural background

reptile animal green wildlife lizard snake amphibian nature frog turtle serpent tortoise branch grass trimeresurus hageni commonly hagen's pit viper species venomous subfamily crotalinae family viperidae male parias hageni's hagen steady attacking stance natural background animal asian background beautiful branch camouflage closeup colorful danger dangerous deadly ecology exotic eye fauna forest green viper herping insularis isolated jungle macro natural nature hagen pit plants poison predator rainforest reptile reptilia reptilian skin southeast tree tropical venom venomous vertebrata vertebrate