User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-7584137-20140815092937/@comment-4009941-20140815125920

1: Maybe or most likely MH world is bigger than the world we live in, That globe looked kinda big and we are only allowed to explore such small parts of area's I mean just look at the map.

2: For a example in Africa,  Wild Dogs, Lions, Hyena's, Cheetah, Crocodile, Hippo(Water Diablos hehe), Ratel's and more can possibly live quite close to each other but they don't go around picking pointless fights with each to extinction. And the Herbivore population looks fine to me in Africa.

3: Capcom once stated realisticly hunters don't kill as many monsters as you would in the game and monsters like Azure Los are so rare they get known as Blue Phantoms to the general public. So in a realistic situation these predators may have quite some space between them. In fact lets not forget creatures not shown in MH but live there include Lions, Tigers, Bears, Wolves, Dogs and more.

4: The guild only releases hunting ban on places with large monster populations or troubles. For example Yukumo was a area the guild barely bothered to take note of, then Zinogre got kicked out of his home by Amatsu and people started getting hurt so the guild released the hunting ban on the area.

As for invasive species like creatures that wander into another ecosystem. Deviljho, Abiorugu, Baruragaru, Raviente, Stygian Zinogre, Vashimu/Jebia Outbreaks, Unknown, Chameleos, Kusha, Teostra/Lunastra, and a few more are all invasive traveling monsters that have no place they call home and never leave. Majority of them are rare to spot to the point of almost not being beleived to exist at first.