During the Gridania Introduction of the game, there is a part where your avatar walks under a ledge, you hear the snarl of the wolf-type mobs you fight, and then you should see one of the mobs run underneath the camera. Except the mob doesn't appear.
It happens about 1 minute and 40 seconds into the cut scene.
Here's a youtube video showing what I am talking about. http://www.youtube.com/watch?v=-J0iOc5BvLM