User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-3298463-20130921003830/@comment-5460283-20130921030645

From what i saw the claws of the Tigrex Rare act like flint stones. So its explosions make sense because whenever it drags its claws against the gound it would create an explosion. And the bomb status would be the tiny particles of the claws that would be launched into the air.