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.
OR-7
Although OR-7 was the first gray wolf to visit California in nearly 100 years, other wolves have since migrated to Siskiyou County, just south of the Oregon–California border. In 2015, the California Department of Fish and Wildlife (CDFW) released a photo of the Shasta Pack, consisting of two adults and five pups. The breeding pair came from the same pack as OR-7, making them his siblings. In 2017, the CDFW and the U.S. Forest Service determined that at least three wolf pups from a second pack, the Lassen Pack, can be traced to OR-7. One of OR-7s male offspring mated with another wolf to produce the pups, the birth of which made Journey a grandfather. The Lassen Pack, which lives in Lassen National Forest, is California's second pack since wolves were eradicated from the state in the 1920s. In June 2017, CDFW biologists fitted the female of the Lassen Pack breeding pair with a tracking collar.