Incident heightens biologists' fears about Everglades ecosystem The alligator has some foreign competition at the top of the Everglades food chain, and the results of the struggle are horror-movie messy.  A 13-foot Burmese python recently burst after it apparently tried to swallow a live, six-foot alligator whole, authorities said.  The incident has heightened biologists’ fears that the nonnative snakes could threaten a host of other animal species in the Everglades.

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