that mimics a tree viper. Xenodon werneri (bottom pic). It is a sorta cousin of hognose and ranges in central and south america. It eats toads, frogs, etc, and has quite a powerful venom for a rear fanged snake as there is one reported death from this species. The snake it mimics is Bothriopsis b. bilineatus (top photo) and it is quite interesting that a terrestrial snake is mimicking a tree viper.
Dan





