Some or all of the Pacapillar's limbs are replaced with pincers. Pincers are a common trait for Poison and Hard Shelled Pacas, and illegal for Soft Shelled Pacas. Only a Poison Pacapillar's pincers can be given a poison Sac. The pincers for a Hard Shelled Paca are more similar to crab claws, allowing them to grab things.