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.
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.