Skog Island, by Melanie.

I think the answer is our fear to what we don't know. When the group of mice first came to the Skog's island, the Skog was a strange creature to the mice. On the other hand, the Skog was also scard. But in the end when they truely meet each other, they finally found that the fear was unnessary. Are we doing the same thing as the mice do? Before we really know the people, are we controlled by our fear? I think it is the main idea what it wants to tell us.