In truth and reality, they really don't. This is a common misconception that has been prompted by the observations of bears using such areas for hibernation. When bears are not hibernating they are out in the woods or on the plains hunting and searching for food, not living in caves or in the mountains. Rather most bears will live on the mountain rather than in them.
in caves
No bears don't live in forts. They can hibernate in caves, but not in forts.
For protection and shelter
Yes, but only Asiatic black bears.
Black bears normally don't live in caves unless they're hibernating. Where they live is in the wild, where humans are far less apt to find or venture to.
No they live anywere in the artic
No. Polar bears really don't live in caves, they live out on the sea ice.
in caves and mountains
in caves and mountains
They won't. They need to live and survive in the Arctic, not the mountains. Polar bears don't live in the mountains anyway.
Bears live in caves and dens. Dens are usually shallow covered pits.
people who live on mountains generally live in tiny caves or under small ridges.