Pack (canine)
Animals which typically predominate over others are associated with the term "alpha". Among pack-living wolves, alpha wolves are the genetic parents of most cubs in the pack. Such access to mating females creates strong selective pressure for intra-sex competition.
The Pack (2015 film)
Maddy hides Hannah and Sean in the pantry while an injured Abi goes out to the vet clinic to get additional ammo as Maddy began storing the ammo in her office to stop them going missing. Abi gets into the clinic and finds there are only a few shells left. She hears a noise in the other room and creeps over to find a wild dog eating the animals in cages. Hannah begins calling her over the walkie talkie which alerts the dog to her presence and it attacks Abi who fights it off with the rifle. Meanwhile, another wild dog is trying to get into the closet and attack the kids but Maddy stabs it with a kitchen knife and it runs off. They make an alternate plan to climb up onto the roof of the vet clinic. Abi goes first to snipe the dogs while the kids stealthily go through the interior dog run. Sean stops to spread some liquid to distract wolves and to collect some unused rifle shells he has hidden there. Maddy has been making firebombs from flammable liquid she had in the house to throw at the dogs while the kids run across the last patch of lawn to the ladder. The leader of the pack sees Maddy and runs toward her. As she runs back for the house she sees it closing in on her. She goes to the pick-up truck instead and climbs through the back window to get the tire iron and beat it. She fights it off long enough to get the truck door open. As it leaps through the window and she slams the door, closing the dog inside. She hides under the truck but is soon dragged out by the dog. As she sits at the side of the truck with the crowbar still in hand, the lead dog approaches her slowly snarling and showing his teeth. As he is about to attack, Abi appears on the back of the truck, and shoots him in the head.