Burmese Pythons Rule Florida's Everglades

In this November 14, 2009 photo provided by the University of Florida, University of Florida researchers hold a 162-pound Burmese python captured in Everglades National Park, Fla. Therese Walters, left, Alex Wolf and Michael R. Rochford, right, are holding the 15-foot snake shortly after the python ate a six-foot American alligator. The National Academy of Science report released Monday, Jan. 30, 2012, indicates that the proliferation of pythons coincides with a sharp decrease of mammals in the park. (AP Photo/ University of Florida, Michael R. Rochford) (AP2009)

In this 2009 photo provided by the National Park Service, a Burmese python is wrapped around an American alligator in Everglades National Park, Fla. The National Academy of Science report released Monday, Jan. 30, 2012, indicates that the proliferation of pythons coincides with a sharp decrease of mammals in the park. (AP Photo/National Park Service, Lori Oberhofer) (AP2012)

In this Jan. 17, 2012 file photo, Secretary of Interior Ken Salazar, center, and Sen. Bill Nelson, D-Fla., left, look at at 13-foot python held by National Park Service Supervisor Ranger Al Mercado in the Everglades, Fla. The National Academy of Science report released Monday, Jan. 30, 2012, indicates that the proliferation of pythons coincides with a sharp decrease of mammals in the park. (AP Photo/Alan Diaz, File) (AP2012)

In this 2009 photo provided by the University of Florida a researcher holds a Burmese python near her nest in Everglades National Park, Fla. The National Academy of Science report released Monday, Jan. 30, 2012, indicates that the proliferation of pythons coincides with a sharp decrease of mammals in the park. (AP Photo/ University of Florida, Jemeema Carrigan) (AP2012)

Snake hunter Dave Leivman, of Weston, Fla., shows a nine-foot python he hunted last Monday, in the Everglades, Fla., Tuesday, Jan. 17, 2012. Secetary of Interior Ken Salazar announced the ban on importation and interstate transportation of four giant snakes that threaten the Everglades. (AP Photo/Alan Diaz) (AP2012)

Secretary of Interior Ken Salazar, helps National Park Rangers as they prepare to put a 13-foot python in a bag in the Everglades, Fla., Tuesday, Jan. 17, 2012. Salazar announced the ban on importation and interstate transportation of four giant snakes that threaten the Everglades. (AP Photo/Alan Diaz) (AP2012)