Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
"And the angel seized the serpent, who is the Devil and Satan, and bound him for a thousand years ... after that he must be loosed for a little while."
This movie was better than I thought it would be, but my expecations were extremely low. It's confused about what it wants to be and who is the hero. It's part nature-run-amok with a herpetologist hero and part possessed-demon-run-amok with an exorcising priest. The priest, whose witch-killing Irish ancestors were cursed by druids long ago, is chased by a King Cobra that escapes from a carnival train after becoming possessed by Satan. The demonic cobra causes the local rattlesnakes to start biting everybody in the small Alabama town where the priest works.
After seeing the horrible effects of the cobra's bites, a cute young female doctor calls in a cute young male herpetologist from another town. He saves her from the rattlesnake in her bed, then takes the snake's place. (Smooth move.) The corrupt town mayor and his corrupt business associate try to cover up the snake mayhem disaster so the opening of their new dog racing track won't be spoiled.
Along the way we have some of the usual cliches - a snake crawls into a woman's bathtub, teenagers at the local make-out spot are attacked by snakes, and plenty of innocent people get bit by snakes, including a naive child snakebite victim (a 10-year-old Christina Applegate - who plays the Mayor's daughter.)
The snakes in this movie are all real, although one that is supposedly shot in the head is apparently either already dead or maybe some kind of fake with some spurting-blood effects added. Congratulations are in order for the use of Eastern Diamond-backed Rattlesnakes and other local snakes, and for actually having the actors interact with them. The herpetologist even picks up what appear to be live rattlesnakes. Even the King Cobra was filmed in the same location as the actors in at least one scene (with glass between them as protection.) But thumbs down for perpetuating the usual negative images of agressive snakes that only want to bite and kill people and for showing harmless snakes as killers.