User blog comment:Logo8th/Slithersong/@comment-26219548-20160605030843

I'm not sure about it but the Deathsong seems to be the subspecies because the Deathsong has the same battle text as that of the Slithersong. And the Deathsong is only considered an Exclusive Slithersong in the game.

Anyways, I think it deserves a page of its own. It's just like how the Screaming Death is kinda like a subspecies or mutated form of the Whispering Death. Also, Rise of Berk has released many different dragons for occassions that one might also consider 'subspecies' eg. Solar Flare and we have given them pages of their own even with their lack of significance in the entire franchise.