* Snow Dens: During the harsh winter months, pregnant female polar bears dig snow dens for birthing and raising their cubs. These dens are often located on higher ground with an entrance that is protected from the wind and snow.
* Ice Caves: Occasionally, polar bears may use ice caves for temporary shelter, especially when they are resting or hunting.
* Land Denning: In some areas where ice cover is limited, polar bears may den in the ground, especially during the summer months.
So, while polar bears don't build homes in the traditional sense, they use natural shelters strategically depending on the season, their needs, and the availability of suitable resources.