text:  The first pair of <unk> is armed with a large , asymmetrical pair of claws . The larger one is the " <unk> " , and has rounded <unk> used for crushing prey ; the other is the " cutter " , which has sharp inner edges , and is used for holding or tearing the prey . Usually , the left claw is the <unk> , and the right is the cutter . 
  