Nature e.p. Fred Kaufman remained surprisingly calm yesterday considering he was sitting next to a man with a 13-foot Burmese python named Pugsley around his torso at TV critics press tour in Pasadena (PBS photo). Kaufman and herpetologist Shawn Heflick answered questions from reporters about the upcoming episode, “Invasion of the Giant Pythons.” Questions included: How does one go about helping a person being crushed by a python? (Pour alcohol on it, snakes despise that.) Kaufman also discussed the impetus for the show: Pythons, some dumped by owners, are quickly reproducing in the Florida Everglades; the episode takes a close look at how the species is having a serious impact on the environment. Critics also got a chance to have their photo taken with Pugsley.