TIM MARTIN / Palm viper on tropical dry forest floor, Guanacaste, Costa Rica

Pete Oxford / Two-striped Forest Pit Viper with one-day- old young. Amazonia, Ecuador

Pete Oxford / Two striped forest pit viper with young {Bothriopis bilineatus} Ecuador Amazon, South America

Pete Oxford / Two Striped Forest Pit Viper mother with day old young. Ecuadorian Amazon rainforest.

Pete Oxford / Two Striped Forest Pit Viper, Ecuadorian Amazon, South America

Pete Oxford / Two striped forest pit viper snake with young, fangs open {Bothriopis bilineatus} Amazon rainforest, Ecuador

Lucas Bustamante / Green jararaca / Two striped forest pit viper (Bothriopsis bilineata) on branch, Tambopata, Madre de Dios, Peru.

Lucas Bustamante / Andean forest pit viper (Bothriopsis pulchra) curled up on fern, Sumaco, Napo, Ecuador.

Lucas Bustamante / Speckled forest pit viper (Bothriopsis taeniata) on heliconia, Yasuni National Park, Orellana, Ecuador.

Lucas Bustamante / Two striped forest pitviper (Bothriopsis bilineata) curled up on log, Yasuni National Park, Orellana, Ecuador.

Pete Oxford / Two-striped Forest Pitviper (Bothriopsis bilineata smaragdinus), native to South America

Pete Oxford / Two-striped Forest Pitviper (Bothriopsis bilineata smaragdinus), native to South America