Five Secrets Revealed about the Eclipse Werewolves

Phil Tippett, who did the visual effects for Eclipse, talked with MTV and gave them a behind-the-scenes look at the Eclipse wolves.
Check it all out here.
Here is an excerpt:

Taylor’s Wolf Is Sad
Tippett and his crew spent countless hours perfecting each member of the wolf pack, but obviously Taylor Lautner’s wolf receives the most screen time and thus required the closest attention. Specifically, they had to capture Jacob’s unrequited love for Bella while he was in wolf-form.
“Through non-language pantomime on the wolf’s part, he had to appear to be engaged and try to make his expressions telegraph the tragic love that is their relationship,” Tippett said. “So there is a sad kind of a longing and protectiveness that we try to imbue him with.”
To get the look right, crew members traveled up to a wolf preserve, and actually got into pens with the 200-pound animals and sketched out what they observed.
“I’m a huge advocate of that. Anytime you can get close to an animal, that’s the closet model you can find,” he said. “And the animators are cast just like actors. Certain animators are really strong on action and there are animators that are really strong on the emotional moments. And the animators strong on emotion were the ones creating the emotional response of Jacob’s wolf.”