Bears are a genuine concern whenever you are hiking in the wilderness,
There are black bears, brown bears and grizzly bears in the Canadian Rockies,
each one listed more dangerous than the one before with grizzlies being the most aggresive.
always make certain you do not 'startle" the bear
and never get anywhere near a bear cub, the mother is not far away.
like most wild animals they will avoid contact with humans
and will run away if they hear you coming.
Because of this many hikers will attach little bells to their hiking shoes so the bears hear them coming.
Whenever you are hiking always be aware of your surroundings and keep your eyes and ears open.
Keep a lookout for bear "signs"
scratch marks on trees is one way they mark their territory,
also look for bear scat and leave the area if you find it.
Black bear and brown bear scat looks about the same
grizzly bear scat can be easily identified because it often has little bells in it.