Monts de Gueret Animal Park
The wolf pack howls on average for 85 seconds. It is usually started by a single wolf, after which other wolves may join in. The pack leader, the alpha wolf, usually uses a lower-pitched howl and howls more frequently than wolves standing on the lower rungs of the pack's hierarchy. Although some functions of the howling are still unknown by scientists, they believe that wolves may howl to scare off other wolf packs from their territory and to gather their own pack, as wolves possess perfect hearing and their howling can be heard for up to in the forest and in open space. Researchers have found a relationship between the number of times a wolf howls and the strength of their relationship with other pack members. According to Friederike Range, co-director of the University of Vienna's Wolf Science Center, "the strength of the relationship between wolves predicted how many times a wolf howled."
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.