30 January 2012 Updated at 21:15 ET
Pythons linked to Florida Everglades mammal decline
Paul Rincon
Science editor, BBC News website
Pythons occasionally tackle alligators, which can end badly for both animals
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Non-native Burmese pythons are the likely cause of a staggering mammal decline in Florida's Everglades.
link-
http://www.bbc.co.uk/news/science-environment-16791094