stucco
dr. dolittle | April 18, 2013 Image of a Giant African land snail from a Florida Department of Agriculture Division of Plant Industry handout.
Giant African land snails, like the one pictured above, are reportedly "one of the world's most destructive invasive species" as they not only consume over 500 plant species, they can actually eat stucco (apparently a good source of calcium). Therefore, I am sure you can imagine the damage they are causing in South Florida where they can grow as large as a rat. Since 2011 when the snail was first seen, more than 117,000 have been captured in Miami-Dade County.
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