Donna Kalil, one of Florida’s most famed snake hunters, usually hates seeing invasive pythons get away, but on a postcard-pretty morning a few days before Christmas, she teamed up with researchers from the University of Florida to release one of the larger snakes she’d ever caught. The snake was a muscular, 14-foot, 140-pound beast, and according to the veterinarian who implanted the trackers, she had an attitude. Kalil knows the snake, once free, will go on to kill native wildlife again.