User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-21378804-20131003110715/@comment-8874090-20131003170043

On the original question of the heaviest monster in the series(excluding the giants, akantor, ukanlos and odeibatorosu), I would say definitely gravios. Ura has some rocks and stones on him, which does make him heavier, but nowhere close to gravios. As it was said before, gravios has a hard armor made of rock and cooled lava, which probably isn't exactly light. He is also much bulkier than ura and a whole lot bigger (i'm not talking about lenght, but the general size, the amount of space they take). Also, unlike ura, he has massive wings, which only adds to his weight. And to be able to support all this, he'll need strong muscles, and muscles are heavy. I don't know how you can even compare them, the sheer size and bulk of gravios are enough to determine the victor.