You can see that happen here as the monster is trying to get the 35% dmg buff.The buffs are actually predictable atleast(the same animal types drop the same buff), even if I wasn't seeing it happen whatsoever in the alpha one of the turtle rock matches I watched had them camp out around the corpse that gives the monster a strong buff so he couldn't eat it before the corpse decomposed.
You can also do stuff like put landmines all around it, kill the animal and get the buff for your team then use Lazarus to revive it, things like that since these are from the bigger monsters.