User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4911512-20120630225600/@comment-4212769-20120701113229

You're forgetting that they don't "move" there. The evolution strand seperates in one that goes in the Tundra and one in the Sandy Plains (Barioth example). Same goes for the other subspecies.

Gigginox Subspecies could have a mutation or genetic defect. Or the same as the others as one that produces poison and one that produces electricity.