User blog comment:WolfQueen/Discussion of the Week: Frenzy Virus/@comment-6050823-20131104234908

So lets see, Goa Magara's hairs are toxic to anything that inhales them, turning them into the Infected Monsters we know and love, and it uses them to cover the area so it can see by the heat signatures left by the hairs(Yeah thats how it sees and it seems a bit more useful in darkness)

Shagaru Magara's virus is alot more dangerous since it can cover a much wider range than Goa Magara's virus and, could potentially wipe out all life in one area completely but also possibly spread to other areas(I could only wonder what an old Shagaru Magara could do to an ecosystem/entire ares). To add more to it, its normal for Goa Magaras to go the Heavenly Mountains because when it comes time to molt, they head their to molt since it seems the Heavenly Mountains are their home(Well that explains why they appear in the Heavenly Mountains and in the High Rank Unknown Great Forest but I wonder if this is also their birthplace).