'New Moon' Director Chris Weitz Says Wolf Pack Has Gotten 'Scarier'

Taylor Lautner's wolf in the first teaser trailer 'wasn't the full-fledged, pimped-out wolf,' Weitz says.

For fans paying attention to the new "New Moon" TV spots that came out over the past week and a half, they would notice that the wolf Taylor Lautner's Jacob Black transforms into looks a bit different than the original wolf in the first teaser trailer.

Well, that's because it is different — about 500 times different.

"Every CGI shot goes through sometimes hundreds of iterations," director Chris Weitz explained. "Like, for instance, that first shot we put out was a work in progress. It was probably version 150 or something. That shot itself is now at version 550, I think."

Lots of tinkering went on in the four months from when the first trailer was released until the most recent teasers, but that's not even the final version that's going to be seen in theaters. "We're still tweaking them to the last possible day," he said.

With the release of [movie id="414921"]"New Moon"[/movie] less than a month away, that day looms ever closer. Fortunately, the wolves are looking significantly more terrifying than they did the first time around.

"They're much scarier by now. That was always the aim," Weitz said. "The aim was to make them as fierce as possible, and they just got more and more and more dangerous as time went on."

Recent trailers have shown the wolf pack in its entirety, and Jacob is not the only werewolf fans have seen change. Still, his jumping transformation was the money shot Weitz wanted to make sure "New Moon" viewers saw — even though the animation hadn't been perfected yet.

"We really wanted to show with that first trailer [that] there were going to be these werewolves; that we could turn a guy into a werewolf in midflight, which was no small achievement," Weitz said. "We were putting out a proof of the concept at the time, but it wasn't the full-fledged, pimped-out wolf that it was going to end up being."

For more from the "New Moon" cast and to see an exclusive clip from the film, check out MTV's "Ulalume: Howling at New Moon" on Friday, October 30, at 9 p.m. ET — and check MTV.com at 10 p.m. to see the clip exclusively online!

Check out everything we've got on "The Twilight Saga: New Moon."

For young Hollywood news, fashion, "Twilight" updates and more — updated around the clock — visit HollywoodCrush.MTV.com.