Expert advice

[macdomain]

Hello out there... I have authored a novel about saving the rainforest, called "Secret of the Tree". I am working on the second installment and need the advice of those who are very familiar with snakes of west Brazilian Amazonia. The story centers around a boy who loves snakes, and finds himself saving the rainforest, so ovbviously I am looking to entertain as well as enlighten and promote wildlife conservation. What are some of the deadliest snakes of that region?