They were there, and left behind some Viking kitties, part of the ancestry of the Maine Coon Cat.
http://www.google.com/search?q=L%27Anse+aux+Meadows+site:freerepublic.com
Coon Cats!
I had no idea.
I would not want to share a Viking boat with one of those kittens.
When they run out of rats, they start eating the crew next!