A wolf is a social creature
There is certainly the occasional solo wolf roaming the woods, but those are old farts who got driven away from their pack. So if your wolf-inspired character is a loner, you should have a very good reason for it. (For example, you got in a serious melodramatic fight with the "alpha," and was forced to take off on your own.)
But, in general, a wolf-like character is going to want to be around others. Their pack doesn't need to be other canines, but it should be something that "resonates." Packs tend to be fairly family-like, with a male and a female, and a handful of children. There's sometimes an "old friend" thrown in there, but it's not a gaggle of local teenagers hanging out. I think this is where I started struggling with Jacob's pack: where was Mom and Dad?
The whole "alpha, beta, omega" thing is mostly based on wolves in captivity, and isn't something that tends to exist out in the wild. That's because the people who would be the beta instead wander off and form their own pack. Packs are family; mom and dad are in charge, and the kids tend to honor their parents.
A wolf covets and protects its territory
Did you see The Wolfman? (If not, don't, it's not great.) While it was another movie I had to struggle to get through, there was one thing about it I really, really loved. Old man Talbot hung out in his ancestral home, and refused to leave. A huge number of his troubles could have been instantly mitigated if he'd just pulled up roots and split. But that was his territory, and by god, he was going to stay there.
Wolves constantly move through their territory, howling and marking trees and the like to communicate to other wolves, "Yo, man, this is my space." I like how Greymane is already exhibiting this kind of habits via the Greymane Wall. It will be interesting to see if Blizzard continues to let the Gilneans be so incredibly territorial.
Wolves communicate by scent
Canines live in a whole other world of scent than we humans can understand. Urine markers, fecal matter, and exuded pheremones all scream to a wolf about pack membership, mood, and territory. While I'm not sure I buy the idea of Gilneans or shaman constantly sniffing party members, it's important to roleplay this other world when emoting as a lupine character.
Using phrases like "this smells like trouble" and "you reek of battle" will probably do fine for bringing scent into your roleplay scenes. It'd be obnoxious to constantly emote bending over to sniff other players, but omitting olfactory roleplay from your character will equally break believability.
Body language speaks volume for wolves
Wolves aren't generally subtle about how they're feeling. Their posture, facial expressions, and tail all describe leagues about a canine's mood. Now, wolves obviously don't talk, so maybe their posture wouldn't be so important if they could have a conversation over tea. That being said, a humanoid Azerothian infected with bestial behavior would probably be pretty communicative via body language.
Brush up on your descriptive language, so that you can emote this behavior. Say things like "Ragnor takes a wide stance, his shoulders and stomach getting more and more tense as the stranger approaches." When you enter a new dungeon for the first time, express that your character crouches low, and that he seems to be habitually pawing at the ground. Not only is the good roleplay anyway, but these body language tics will do a lot to communicate your werewolf's bestial nature.
Don't forget to bare your teeth when angry. C'mon, the vampire roleplayers are constantly talking about their fangs. Your werewolf character should peel back their lips when angry, appearing as if they're ready to tear out someone's throat. Anger needs to be a visual thing for a lupine character.
Howling around the fire
Wolves howl as a communicative measure, usually centered around territory. They're claiming their land, their kill, or their pack. There's been some evidence that howling might also be a social bond.
It would be fun to think of your wolf character as a singer, who's constantly trying to encourage his party members to join in with him or her. After all, this is an important part of the wolf's life, and they'd want to share it with the pack.
Wolves believe in their personal space
Wolves don't sleep in puppy piles, and they're not interested in having other people paw them. This behavior gets stronger as they age, and it's probably expressed in roleplay in the same vein as territorialism.
What does this mean? Your werewolf character won't shake hands, won't playfully slap friends on the back, and he won't be interested in being crowded. Even laughing and playing around a campfire, your werewolf will want its space.
Wolves have a little bit of xenophobia. Strangers and rapid change will be very uncomfortable to your wolf character. If they've been at the bar all night, and a whole new wave of people come in after a local show, there werewolf won't be happy. They might pick a fight as a way of defending their territory, or they might just decide to leave.
This article wasn't meant to be a scientific study of wolf behavior. My point is that there's plenty of factual wolf information out there. And while vampires don't have a real life counterpart, werewolves do. Take the time to bring some real-life wolf behavior into your roleplay. Your audience will "buy" your behavior much more. Don't be a gaggle of pretty teenagers; be something you'd find in the wild.
All the World's a Stage is your source for roleplaying ideas, innovations, and ironies. You might wonder what it's like to sacrifice spells for the story, or to totally immerse yourself in your roleplaying, or even how to RP on a non-RP server!