User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-5020152-20121125150806/@comment-5489419-20121125164736

I'm not too sure. If it was just a Qurupeco Subspecies habit, then we could rule it out as an aesthetic change of behavior to set it apart from its "normal," green counterpart; but if they both do it, then maybe it was just a hot fix to Qurupeco's animations just for the heck of it!