User blog comment:Lord Loss/Discussion of the Week: Pseudowyverns/@comment-173.85.92.45-20121115153012/@comment-4212769-20121116111746

Barioth never walks on two legs. Just imagine when those three after spotting you. For a short while they walk towards you, Nargacuga and Tigrex on two legs then when they decide to fight putting the two front limbs on the ground while Barioth walks on four legs like a lion towards you when it spotted you. Just imagining Barioth walking on two legs is weird... :|

Also the term Pseudowyvern is pretty right because those Wyverns doesn't follow the mythological definition of a Wyvern, means two legs and two wings. So in this point of view Pseudowyvern is a correct term.