User blog comment:Lord Loss/Monster Hunter Frontier G 2 Discussion/@comment-1011548-20130715110648/@comment-4009941-20130715190030

The answer to why Vomit is because thats what Pariapuria always use and it is very effective.

And its even said by the info from the monster and its items that when Pariapuria dies, its stomach gets loose and its digestive juices digest the monsters body.

They can digest anything organic it seems and are immune to eating Poison, Paralysis and Sleep food traps. You can barf them and get items also, I even got a Golden Rajang fur from a Gou ones vomit!.