UNDATED (CNN) -- The Florida Everglades' mammal population is dropping left and right and it's all because of the enormous appetites of certain animals.
A new study shows invasive Burmese pythons and anacondas have been mating like crazy the last decade and are now eating everything in sight.
Researchers with the U.S. Geological Survey found sightings of animals including raccoons and opossums in the Everglades have dropped almost a hundred percent since 2000.
And researchers say if you're looking to see a rabbit or a fox there, you'll be hard pressed to find any.
Officials say the snakes began taking over after pet owners released them into the wild.