User blog comment:Kogath/Monster Hunter: World Discussion/@comment-32282413-20170919130438/@comment-25275196-20170920001153

Bats are Mammals IRL. It's alreayd been proven by Qurupeco and Malfestio that you don't need to be a reptile to be a wyvern, so I'm thinking something along the lines of a new class of monster that still has "Wyvern" in the name.

Or it could be a new Fanged Wyvern. That would suit it more than it suits Zinogre.