In Wolf Quest, Balto had dreams that he was running on ice, chased by a Raven, and falling into a black abyss. In reality (unless you don't belive in this stuff) these are what the dreams meant, in real life:

On Ice: To dream that you are walking/running on ice, means that Balto was taking risks that he shouldn't be taking.

Falling- To dream this indicates a lack of control, insecurity, and/or lack of support in your waking life. Does this have anything to do with Aleu?

The Raven- To see a raven in your dream, symbolizes betrayal, disharmony,  misfortune, and death. Betrayal, maybe because of Niju, disharmony, maybe because of the famine, misfortune, because of Aleu not getting her home in the first place, but what about death?

So, there you have it: if Balto was real and had these dreams, they could mean things like this. But we all know he dreamed about the Raven because it was his mom.