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.
Cub Scouting (Boy Scouts of America)
Cub Scouts who join a pack are assigned to dens with ideally six to eight members, usually based on age: Lion Scouts (kindergarten), Tiger Scouts (first grade), Wolf Scouts (second grade), Bear Scouts (third grade), and Webelos Scouts (fourth and fifth grades). Dens meet weekly or biweekly under the direction of the adult den leader. A Cub Scout is elected to the denner position to provide basic leadership to the den. A Boy Scout, Varsity Scout, or Venturer holding the den chief position may assist the den leader in activities. Den meetings are planned around a particular adventure being worked on for rank advancement and may include games, handicrafts, hikes and other outdoor fun while also preparing for the next pack meeting.