An animal I have not yet seen but many have here, is Mårdhunden/Raccoon Dog (Nyctereutes procyonoides).
Originally from Asia, it was introduced to the European parts of the Soviet Union during the 1920s and 50s to increase the wild fur production. They have spread north-west and are now firmly established in Finland and increasing in Sweden. As a predator like the Mink in the UK, they are having significant impact on the native fauna.
Here are some links providing more information:-
Mårdhunden – pa svenska
Raccoon Dog – in English
When I see one I will let you know.