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.
Lone wolf (trait)
A lone wolf is an animal or person that generally lives or spends time alone instead of with a group. The term originates from wolf behavior. Normally a pack animal, wolves that have left or been excluded from their pack are described as lone wolves.