I went "awww" until I read wikipedia about them and saw that they're invasive. They're native to South America, and have been introduced to other places around the world by fur traders.
The fact that the animal was brought by people somewhere it doesn't belong doesn't mean it can't inspire an aww. It's just one more bad thing about people, not about the animal.
They are a serious danger for dams and dikes, as they like to build their tunnels in them. And they had to close a train line recently because Nutria basically destroyed the embankment under the tracks.
Nasty little buggers who build their tunnels in dikes and dams. Which makes them a real threat at the current high waters. You are not allowed to feed them, but stupid people still do it. Just a few weeks ago they caught one who had spread a whole sack of carrots to feed them.
On another note: There is an offical hunter somewhere in the area who sells Nutria meat loaves.