User blog comment:Ohmpahkan/Monster Hunter Frontier: Hardcore monsters/@comment-3426677-20110225100251/@comment-3298463-20110225165801

Many monsters have slightly different attacks in higher ranks while not having acompletely revamped moveset (like the ones i'm covering). For example, I know Super Golden Rathian can throw rocks with its backflip past a certain rank and that you need Ultra Earplugs to protect from its roar. I guess these guys have similar modifications.