Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-70.62.56.205-20130725042949/@comment-8038513-20130726054736

peter was a beast because his animal side completely took over to heal his burns, but he needed the power of an alpha to heal completely which is why he killed laura. laura probably inherited it from her mother genetically. i doubt that every alpha has a "full alpha form", just from being an alpha, as it seems that most werewolf stuff in the teen wolf universe is emotional or mental.