According to sources around Hollywood, things may start looking very hairy for Taylor Lautner.

But Lautner, 16, has a more uncertain future.

And by greatly expanded, we mean into a hulking, snarling, seven-foot Lycan.

Taylor Lautner

Credit: Chris Polk/FilmMagic

Jacob is a totally different character inNew Moon, says Melissa Rosenberg, screenwriter of bothTwilightfilms.

Hes a foot taller and huge and hes supposed to look 25.

Its really a question of whether or not the same actor can play the role.

Rosenberg is quick to add, however, that everyone would love to keep him.

We all think hes the loveliest person ever.

Lautners certainly been doing everything in his mortal power to hang on to the part.

My job forTwilightwas to bringTwilightJacob to life the friendly, happy-go-lucky little Jacob, he told MTV News.

My job forNew Moonis completely different.

Ive been looking forward to that.

Ive been getting ready for it, and I can assure them I will follow through with that.

In fact, pro-Lautner/anti-Lautner fights have been breaking out on the Web for weeks.

Thats a tall order.

Yes, there are exceptions.

Just this past October, Marvel announced it was replacing Terrence Howard with Don Cheadle inIron Man 2.

Im very hopeful, aNew Mooninsider says of Lautner.

Were not looking at anybody else.

Even if Lautner does keep his job, he may be nervous enough to start pulling his fur out.