In Search of The Man-Eating Python - S1.E1

Austin Stevens goes to Borneo to find the Reticulated Python. He soon finds the snake on the edge of a river bed. Thinking it was a small snake hidden beneath the log, it turns out to be a 20-foot snake which bites Stevens on his arm (edited off in the final episode, but shown in Most Striking Moments) and coils around his waist.