The Poet's Dog by Patricia MacLachlan*

Two children are lost in a snowstorm.  A dog, Teddy, finds them and leads them to a cabin in the woods.  For days the threesome is stranded in the cabin.  As the story progresses, the reader discovers why the dog is there alone and more about the owner of the dog.
Beautiful story!
The story is told from Teddy's point of view.