User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-16218874-20140331155108/@comment-1712810-20140402174638

@Kogath: That's a very good question. I'm going to assume the difference in roars might've actually been a mistake at first, which the dev team fixed in later titles... OR... they just decided that giving a subspecies a different roar just wasn't necessary.