One thing I haven't generally had to pack when going for walks in the countryside - until I went to Montana - is bear repellent.

These are standard issue in that part of the world - you can buy them everywhere.

To an Englishman, an aerosol seems more appropriate for dealing with a small insect than a charging grizzly, but since the usual alternative advice is to lie down and play dead in this situation (which may cause the grizzly to ignore you), I can see why these are popular travel accessories.