[A Salt Weapon]

Originally Posted by Rain Man

I agree. Plus it gives us a splashy opening scene. I'm envisioning a messy, low-end rental house with several crack addicts and crack ho's sitting around. They hear something outside and suspect cops. As one of them stands at the window, "POW!" A wolf flies through it and grabs him by the neck, flinging him around like a rag doll. I suspect that wolves will prefer eating the heads first because they probably contain more crack. The rest of the pack then follows the leader through the broken window and pandemonium ensues.

Good start, maybe after the opening attack flashback and focus on the first attack when the wolves discovered crack heads. Maybe it started with a crackhead that had a pet wolf, the wolf pet starts licking the mirror or whatever crackheads use, and wigs out. The crack wolf drags his owners carcass out to the wild pack in the woods or something.