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.
Pack (canine)
The Ethiopian wolf ("Canis simensis") has different social behavior from the gray wolf: pack members hunt alone for rodents, and come together mainly to defend their territory from other packs.