Toxicological trivia from September 16, 2015:  Spilotes pullatus, commonly known as the caninana,chicken snake, yellow rat snake, or serpiente tigre, is a species of large nonvenomous colubrid snake endemic to Mesoamerica. It is found in southern Central America, northern South America, and Trinidad and Tobago.It tends to inhabit forested areas, and is often found near water. It is mainly arboreal, but also terrestrial.Their bite:a) It is poisonous;b) It is not poisonous;c) Both previous assertions are correct. It depends on the time of year.

Correct answer: b. Read more in WP. Watch also video in Spanish page.