Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-66.177.104.107-20140302025823

In the first season, the alpha wolf appears as a large half human, half wolf creature that appears more wolf though. Laura Hale can also transform into a full wolf and so can Dericks mother Tahlia, why can some wolves like the ones mentioned change but some cannot like Derick and Scott? (sorry for any mispelled words or names) 