[Slings and Arrows]

Raccoons released by Hermann Goering in Germany in 1934 to "enrich the Reich's fauna"

By eating other peoples' garbage?

By adding diversity to the local roadkill.

[Eurotwit]

Well, that answers one question. However more worrying perhaps is this report from the sun:

"The menace follows reports of ten million “Stalin” crabs with a 3ft claw span heading towards Britain from Russia."

http://www.freerepublic.com/focus/f-news/1094610/posts