User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5089728-20120926040336/@comment-4212769-20120928091007

I want to pick up the seeing through lava thing:

Seeing through lava is completely unnecessary. In the case of Lavasioth it just raises its head now and then to see if someone coming (what is of course very dangerous but in the lava not too much).

But the case of Agnaktor doesn't need seeing in the lava at all. As Sonic Bombs work on it while under the lava it must be a good sense of hearing to perceive if something's coming. But I think it also has a great sense of feeling or better of vibration. Means it can feel the steps of a monster/hunter, a fight and can pick the ideal moment to attack.

One of my grounds in this is the clacking of the beak when something comes in. That's mostly observable with Uroktors because Agnaktor roars to alert the others (of itself or of others). While the roar could be heard from most monsters, the clacking is very quiet comparably. So my conclusion is that the vibrations alert the other Uroktors and Agnaktors if the clacking cannot be heard by them. (At least it would be that way when Capcom's game mechanics of realizing an enemy wouldn't be limited by seeing only but some exceptions.)