Dream interpretation.?

I had a dream that I was walking through a mall, left the mall and went to a small, nearby bookstore (in real life I often go into both) as I picked a book of the shelf a great dane/rottweiler mix that was very large and foaming at the mouth entered the building and I jolted. I know it chased me but I didn't see it. I ran around a bookshelf and that's when I woke up. I remember everything so clearly, even the time of day and what I saw along the way. in the mall i noticed a poster for a stupid-looking movie and saw an asian guy in a dodgers cap drop a bottle of water. I walk through that mall nearly everyday, an if i see an asian man drop a water bottle, i plan on hiding in the bathroom for a long time.