Wolves as pets and working animals
Some wildlife centers housing captive wolves prohibit handlers from entering wolf enclosures if they happen to have a cold or other vulnerability which the wolves can detect. Captive wolves are generally shy and avoid eye contact with humans other than their owner, as well as not listening to any commands made by any other humans. They usually vacate rooms or hide when a new person enters the establishment. Even seemingly friendly wolves need to be treated with caution, as captive wolves tend to view and treat people as other wolves, and will thus bite or dominate people in the same situation in which they would other wolves. Ordinary pet food is inadequate, as an adult wolf needs 1–2.5 kg (2–5 lbs) of meat daily along with bones, skin and fur to meet its nutritional requirements. Wolves may defend their food against people, and react violently to people trying to remove it. The exercise needs of a wolf exceed the average dog's demand. Because of this, captive wolves typically do not cope well in urban areas. Due to their talent at observational learning, adult captive wolves can quickly work out how to escape confinement, and require constant reinforcement by caretakers or owners, which makes raising wolves difficult for people who raise their pets in an even, rather than subordinate, environment.
List of types of fur
In Medieval Europe, pelts were considered the only practical aspect of wolves, though they were seldom used, due to the skin's foul odour. In Scandinavian folklore, wolf-skin girdles assisted in transforming the wearers into werewolves. Several Native American tribes used wolf pelts for medicinal purposes, though some Inuit tribes favour dog skin over wolf skin, as the latter is thinner, and more prone to tearing when sewn. The Pawnee wore wolf skins as capes when exploring enemy territories. The United States Army used wolf skin for parkas during the later stages of WWII and the Korean War to protect the faces of soldiers from frostbite. In the Soviet Union, between 1976 and 1988, 30,000 wolf pelts were produced annually. Recent statistics from CITES indicate that 6,000–7,000 wolf skins are internationally traded each year, with Canada, the former Soviet Union, Mongolia and China being the largest exporters, and the United States and Great Britain being the largest importers. Overall, the harvesting of wolves for their fur has little impact on their population, as only the northern varieties (whose numbers are stable) are of commercial value. Wolf trapping for fur remains a lucrative source of income for many Native Americans.