Fanged Wyverns differentiate themselves from the Fanged Beasts despite both being mammalian. Fanged Wyverns are known for their sheer size and power, in comparison to the smaller Fanged Beasts, and are distinctly lupine. Currently only two species are known to reside within the Fanged Wyverns category, the thunder monarch Zinogre, and the hellhound dragon-thunder Stygian Zinogre.