The grey squirrel is a common resident of a good part of North America. The accompanying panel places this in the Gatineau Hills. From the look of the Ottawa River, which is seen painted in the background, this is in fact at one of the lookouts along the Champlain Parkway, an area I'm quite familiar with.
This one features the Arctic ground squirrel.
How social are mammals? It depends on the species. It depends on the animal. A wolf is a highly social animal. So are herd animals like caribou or bison. Something like a wolverine will tend to be less social.
The next diorama is another big one, with a showdown between a pack dog and a group of muskoxen.