User blog comment:Lord Loss/Monster Hunter Frontier G 2 Discussion/@comment-12490228-20130913043959/@comment-6050823-20130913044734

Some attributes or characteristics that a monster has it will gain from drinking their blood. This seems to be indicated by Baruragaru's color or changes to its body(So when it sucks Ioprey or Iodrome blood, it'll be able to use poison).