User blog comment:Lord Loss/Monster Hunter Frontier G 3 Discussion/@comment-6050823-20131022215855/@comment-4009941-20131022220942

As far as I know thats unknown for now but I will say from that investigation quest with Iodrome and 5 of his pack members you get some fangs that are labled as mysterios and are used to make some Baru piercings. I guess those Ioprey are survivers of Baru attacks.