Add Yahoo as a preferred source to see more of our stories on Google. Ten days before Christmas, a distraught South Florida homeowner called Michael Ronquillo about a snake in her neighbor's yard.

Pythons can tolerate saltwater and freshwater and have been observed swimming in Florida Bay and Biscayne Bay.

Asian swamp eels, mucus-covered air-breathing fish that implode marshland food chains from the bottom up, have earned a nasty ...

If they reach the ecosystem's carrying capacity in the Everglades, the pythons will spread, and that likely means into backyards.