Not native to the U.S. Brought in to raise for fur. They got out of control. Very destructive creatures.
We have many species of plants, warm blooded creatures, fish and insects that are not indigenous. Some were introduced intentionally others arrived accidentally on cargo ships. All are detrimental. Some even dangerous.
Did you put some giant salvinia in your "green" gumbo? That stuff has taken over Lake Lake Bistineau. Over here in North Texas, we are dealing with Zebra Muscles. I wish we could make some food out of them.
CD