Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-16913753-20130831054918/@comment-11533671-20130901153548

The forms we've seen so far from S2-S3 are only half-forms. It is true that the appearance they take on is a reflection of who they are so the Demon Wolf form of Deucalion reflects his nature. However, as it has been discussed in other forums AND from Jeff in interviews pre-Season 1, the FULL form of an Alpha is either a full wolf like Talia and Laura or it will be more akin to Peter's FULL transformation in S1. Due to the cost of making the Full form we haven't seen one since S1.

The other important thing to note is that the werewolves do NOT have to take on Full form in order to use their enhanced abilities. Jeff envisioned the werewolves of the show to be much like the one from An American Werewolf in London, according to the interview he did to promote the show right before S1 aired. He has stated that the budget doesn't allow for them to show this for every werewolf.

Jeff has also stated that Derek's form has been a progressive one since S1 and points out that from S1-S3 you can see his brow take on a more beastial shape and his teeth have become pointier. Eventually as Derek learns how to shift more he will have the ability to form into a full form of some sort, either like Talia or Peter is yet to be seen or known. Given the fact that Jeff feels that the "Wolfman" type of Werewolf is a cop out and is a fan of the more monstrous looking forms, I think it is safe to assume that IF and when the budget allows, we will see more of the FULL transformations.