Chris Weitz decided it would be a visual aid to have the five men all have the same tatoo so that they were easily recognisable as the wolf pack. But don't worry, every single change that Weitz makes to the film is okayed by Stephenie Meyer herself, which means its nothing that she wouldn't have done herself if she had chance to re-write the books.
It's symbolic and makes them seem more like a pack.
Because those books make no sense. There is no reason.
In 'New Moon' Jacobs pack grows to 10
there are 4
I don't know. I think it has to do with the fact that they are awesome.
The Pack
Sam Uley...
The Wolf Pack
Five in New moon but as the pack gets bigger in eclipseand breaking dawn when the pack gets to 11 wolves
hena
Jacob* but anyway.. Jacob does belong to the Quileute Wolf Pack
They are all teenagers, Sam is the oldest in his early 20's. Jacob is 16 in Twilight New Moon.