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 (1977 film)
McMinnimee, who lives in a cabin alone with his German Shepherd Shazah, soon learns of the wild dog and returns to his home. When a storm hit the island one evening, Shazah starts up a riot and tries to break out. Armed with his rifle, the old man opens the door to his cabin and tries to find out who is intruding onto his property. Shazah bolts out into the front yard, but is suddenly attacked by the golden-haired mongrel and several other feral dogs. McMinnimee is too late to save his dog from the pack, though he manages to shoot and kill a collie, one of the pack members. As he tries to secure the door and windows to his house, the dogs break through one of the windows and attack the old man, killing him.