The wildlife in the Nordic area is very rarely dangerous. In the whole of Norway (60% more land area than the UK) there are a couple of dozen wolves and about 140 bears. The commonest large animal is elk and that is what the Norwegian hunting rifles are for.
You are more likely to be bitten by an adder than attacked by a large mammal and even then fatalities are rare.
As for the sparse population that is an example of averages being very misleading. Where there are any substantial numbers of people the population density is similar to the average for the UK while the mountains and high plains are almost not populated at all.
