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Backstory: Accidental tourist on the run

Cute, but no longer a fashion statement, the prolific and environmentally destructive nutria is the focus of wildlife officials from coast to coast.

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My wife had a nutria coat, elegant and warm. One day she decided to send it back to where it came from, to her sister in Argentina. "I don't want anyone throwing paint at me," she said.

It was the 1980s. Animal rights militants were active. One threw paint on a woman's fur coat outside Bloomingdale's in Manhattan. That's when my wife decided to go fur-less.

Before that humanitarian groundswell called the animal rights movement emerged, a nutria pelt would sell for over $8, a well-tailored coat for a couple thousand. No wonder there were so many nutria around, bred on farms throughout the south and west. There was money in it.

Then the fickle god of fashion frowned, and the fur industry fell into a funk. Coast to coast thousands of caged nutria were rendered worthless. Nobody wanted their soft brown fur. Before long, nutria escapes became common, here and there hundreds made for the swamps. Hurricanes, floods, and other unpleasant expressions of Mother Nature's nature helped by blowing over fences and raising water levels, enabling the animals to swim to freedom. Some fur farmers simply opened the gates for their devalued inventory.

Time passed. Then came the blowback: the revenge of the nutria on America, the assiduous assault by an alien horde of orange-toothed ecological terrorists. The invasive nutria, because it consumes the roots of plants, has, over the years, destroyed millions of acres of marshland – the habitat that baby fish, crabs, ducks, and other fauna need to survive. Nutria wreak havoc just by doing what comes naturally to them.

What is the nutria? It's a brown, semiaquatic rodent, with a long ratlike tail, webbed hind feet, and orange beaverlike teeth. It comes from Patagonia, and grows to about 20 pounds and two feet in length. It lives two to three years; the female produces about 10 offspring a year.

Nutria are now established in about 40 states, up the east coast from Louisiana to the Mason-Dixon line, and out west from California to Washington. They were first introduced in the US in 1899, in California, then Louisiana in the 1930s. Their first big breakout occurred in 1941 during a hurricane in Louisiana. Today Louisiana is infested with about 20 million nutria, say wildlife authorities.

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