Hunts in packs, dies in bulk
The bigger, better, badder brethren of the raptor has a bone to pick. Yours. From your rotting corpse.
Stronger and tougher than regular raptors, it has developed a special pheromone aerosol that sends its allies into a fit of rage.
Anger-inducing aerosol that rallies nearby raptors and gives them the Enraged buff