Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-69.121.172.69-20130820040029/@comment-99.2.36.17-20140216052015

i think the Hales being a long line of werewolf lineage allows them to fully or somewhat transform into a full wolf. I think Peter's monstrous form is because of him being in a comatose state for years which means he hadn't transformed during those inactive years and as we seen with Boyd and Cora you go into a homicidal state but with Peter it was just his form that became monstrous instead of his behavoir when he became alpha.