User blog comment:Kogath/Monster Hunter Generations Discussion/@comment-26034899-20161005224225/@comment-4969421-20161006064717

This is untrue. Simply because the game has no monster vs monster mechanics. Certain monsters (such as Jaggi, or Deviljho when low on stamina) attack others in-game, but said monsters never engage in actual figths. They keep doing what they would do when the Player remains unspotted, which is wandering around aimlessly, doing a couple "look around" animations, and eventually leaving the area. You will never see a big monster actually killing another one from full health on its own.

You know it would be a tiny little bit easy if you could just wait for a monster to invade a quest and then wait for it to kill the main objetive of said quest.