User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-74.193.207.108-20121010154710/@comment-74.193.207.108-20121011031155

@Shinyscyther Even though Zinogre and Stygian Zinogre are currently the only Fanged Wyverns I'm certain capcom wanted them to have reptilian and mammalian traits. I believe that capcom based this monster class on Therapsids which were a group of animals that had both reptile and mammal traits. Zinogre are covered in both scales and fur while Tetsukabura is covered in just scales and has reptilian and some amphibian traits(its back legs).