Florida has had a rough go of it over the last few years, at least as far as non-native species are concerned.
First it was the Burmese pythons in the Everglades. These giant Asian snakes wrecked their fair share of havoc on the local ecosystem, but a new threat has them edged out in terms of sheer "ick" factor.
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This isn't the first time the disgusting pests have been sighted in the United States. Gambian pouched rats have been killed in Brooklyn, New York -- second picture below -- and on a previous occasion in the Florida Keys. In 1999 Grassy Key experienced a similar invasion, but since then wildlife officials thought all the giant rats had been eradicated.