Hmm one of my friends who watched it with me made a great comment i almost forgot about, you can clearly see that there are real snakes in the movie. And even though they act like they are dangerous, they let them crawl all over actors and have them everywhere around them. He said, 'well the ones that are 'dangerous' are obviously cgi, and everyone who watches the movie can see that the real ones aren't dangerous to the actors at all".. It's something i completely missed, already knowing all the live snakes were harmless.. But he, not knowing much about snakes.. picked that up fairly quickly. Maybe more people picked up on that