http://news.yahoo.com/news?tmpl=story&u=/ap/20040426/ap_on_sc/giant_snails_2
Federal health officials have seized several dangerous pests called Giant African Land Snails from Wisconsin classrooms and have started a national search for the creatures.
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They are concerned the snails, which also can be found in India, China, the Philippines and other countries in the region, could be transported to states with warmer climates, where they can rapidly reproduce and destroy plants. The snails are known to consume as many as 500 different plants and their mucous can transmit meningitis.