P.S. I just noticed your comment about the "kiore rat". In the Azores (smack dab in the middle of the Altantic), there are two types of mouse. One mouse hails from Iberia. Which makes sense, given the Portuguese ownership of these islands. But on two or three of the more remote islands, the mice have DNA that hail from Norway. There are no known records of Ostmen ("Vikings") making it as far as the Azores. But ... folks get around.
P.S. I just noticed your comment about the "kiore rat". In the Azores (smack dab in the middle of the Altantic), there are two types of mouse. One mouse hails from Iberia. Which makes sense, given the Portuguese ownership of these islands. But on two or three of the more remote islands, the mice have DNA that hail from Norway. There are no known records of Ostmen ("Vikings") making it as far as the Azores. But ... folks get around.