User blog comment:The Monster-Hunter/Gigginox Subspecies/@comment-1685631-20101208133435/@comment-69.253.97.123-20110703020723

Supposedly Khezu ( and possibly Gigginox) are the "missing link" between pseudowyverns and true wyverns. While the build of the Khezu is similar to that of a wyvern, it does travel much faster on all fours, much like a Tigrex or Ukanlos. Also note that Gigginox ALWAYS takes the pseudowyvern attack stance.