User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-184.38.6.64-20120131225239/@comment-184.38.6.64-20120202024458

Now on to the monster theory.The theory I have is that similar to the snowy mt. and desert the tigrex may sometimes migrate to the sandy plains and tundra when there is lack of food in the other areas and some tigrex may stop at the volcano and than see the large amounts of prey like aptonoth that it could hunt in the volcano that eventually like in a few months they become the black tigrex we see in the volcano.Now the bullfango and bulldrome.I say is it possible similar to some wild boar that they are hunted for their hide and meat and could be transported by ship and when some are transported some may be able to escape from openings in a farm or ship that landed with a opening that allows them to get out into areas like the flooded forest and deserted island where they have became an invasive species in some 3rd gen areas.So the bulldrome may just be an overgrown farm rasied bullfango who was fed alot but possibly now aren't found because some people who possibly farm them is because some farmers improved their caging for them but from bullfango being smaller they can escape with little ease.