Skinwalkers (2006) on Netflix

Creatures, bound by the blood of the wolf, that can kill with curses and move at lightening speed, watching the night sky for the rise of the blood-red crescent moon. They are SKINWALKERS. They feed on our flesh and thirst for the taste of human blood. The red moon signals each pack, divided by principles, hell bent to survive an ancient prophecy. On his 13th birthday, Timothy a half-blood, is about to reach the time of his transformation. He's been guarded since birth by those around him. They know the power he holds. He alone has the power to control the destiny of his family, and their kind, a gift that has placed his very life in danger. On the third night, at the rise of the red moon, a war will rage for control of their kind. There are two warring factions: one would like the curse to end, the other embraces bloodlust, and revels in the immortal freedom of the beast within. They will do anything to preserve their way of life. To survive, it means finding the boy. The one with the power to control their very survival. "I am not human," says Varek, "I am better than that!" Under the full red moon, the violent feud pits brother against brother, lover against lover, and good against evil.