User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-121.223.138.126-20110908044037/@comment-90.200.126.173-20110908090315

Theres no stopping it hunting like the tigrex - in one area and living in another (in this case the volcano zone). My guess is as you say above you stumble across him first in a starter area, and then fight him somewhere else. For Demo purposes they'd start you of in harder areas, so thats probably why there showing this image, ready for the demo (possibly).