Endangered Wolf Center
The Endangered Wolf Center is a non-profit wildlife facility in Eureka, Missouri, United States, near St. Louis that is dedicated to preserving and reintroducing to the wild critically endangered species of wolves. It is certified by the Association of Zoos and Aquariums (AZA). The Center was founded in 1971 by renowned naturalist Marlin Perkins and his wife Carol, who saw that wolves around the world were in danger of becoming extinct. Its mission is to preserve and protect Mexican wolves, red wolves, and other wild canid species, with purpose and passion, through carefully managed breeding, reintroduction and inspiring education programs. Animals born at the facility have been reintroduced to North Carolina (red wolves) and Arizona and New Mexico (Mexican wolves). The Center's research focuses on reproductive, behavioral and nutritional needs for the species housed there. The Endangered Wolf Center is a founding member of the AZA’s Mexican Wolf and Red Wolf Species Survival Plans. As of August 2016, the Center had six species of endangered canids: Mexican wolves, red wolves, maned wolves, African painted dogs, fennec foxes and swift foxes. It had more than 20 Mexican gray wolves, more than any other managed breeding facility. (Only 97 Mexican wolves were known to exist in the wild as of 2015.) The Center serves as the cornerstone of the U.S. Fish and Wildlife Service's program to preserve Mexican wolves and reintroduce them to the wild.
Sarek National Park
There are three rare mammals who live in this zone. The wolverine inhabits a vast territory, roaming as far as the coniferous forests in winter, but the alpine zone is their main territory. They mostly eat carrion, but they do also hunt living animals such as small rodents, birds and insects. The wolverine is labelled as an endangered species in Sweden with an estimate of 360 individuals in the country in 2000. The Arctic fox is a critically endangered species in Sweden, with only 50 individuals in the whole country. They dig extensive networks of tunnels in areas above the tree-line, with several families inhabiting the same sett. The park is one of the last sanctuaries for the gray wolf, a species also critically endangered in Sweden. In 1974–1975, the park was home to the only remaining wild wolf living in Sweden. Although the wolf population is now growing, they have not yet achieved a stable number in the park.