So guys... What if Danny is the shifter?
Yeah, yeah I know. Doesn't make that much sense, but hear me out on this one.
Teen Wolf has had a way of giving us a little bit of a heads up with it's big old monsters. It gently introduces them without any correlation to the bad guy, then creates all these diversions to make you think it's someone else.
It would be probably the last person anyone would expect for the shifter. And I've not worked out a motive yet, except perhaps fear that it seems that everyone else in Beacon Hills is jumping over to the mean and growly side.
Plus, before season two started, they said that Danny was going to be playing a bigger role. And I doubt that has anything to do with him being smelt up by Scott.
Sorry for the blurry screenshot, but look what we have to work with.
It's a fit body, much like one you'd get from playing lacrosse, perhaps a bit more muscular than Dannyboy but that might be the scales talking. The headshape seems to match up, the nose might be a bit wider, but when our boys wolf out their features shake it up a bit as well so there is that.
Not to mention how 'cool' Danny seems to be with everything. Maybe he's just playing that card, but really knows what the hell is going on.
I don't want it to be him and I'm probably wrong but I'm putting my two cents out there now.