User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4081776-20120603020018/@comment-1011548-20120603201352

(Unite) Volcano still has a reasonable ecosystem. At the bottom you've got the few hardy plants that grow there, mineral rich rocks, then Vespoids, Bullfango, Aptonoth, Apceros Ioprey/Iodrome, Ceanataurs, baby other monsters. Moving up a bit, there's Basarios, then all the Wyverns, Shogun, Lavasioth, Teo/Luna, Rajang. Only then at the top do you have things like Akantor and Crimson Fatalis.

Shogun's are omnivores, you see them picking up random bits of food off the ground all the time. I imagine they also scavenge on carrion and could probably cut down a few dim-witted Ioprey/Dromes.

Agnaktor eats Rhenoplos, we see that happen in game. It probably preys on small Herbivores as well, as well as any young, old or weak monsters.

I admit the ecosystem is a little bit top-heavy, and there aren't really enough plants to support it, but it's not too far-fetched.