Real wolves were used during the production of this movie.
No live rounds were fired during production. All the muzzle flashes were digital. However, the flame-thrower was 100% real.
A body double was used for five-time Emmy winner Heather Tom (Officer Victoria) when she transforms from the mother wolf back to nude human form. Her face was added digitally.
The working title of the movie during production was Red Dead.
The map on the walk to show the location of the wolf attacks at the 28 minute mark is Eastern Ventura County California. It is the 118 to the 23 to the 101. Simi Valley to Moorpark to Thousand Oaks.