sentences:  The IUCN list also contains other species which were extinct in the wild in the past but which have survived in human care, and several of them have been reintroduced by zoos and wildlife parks to their original habitat (Californian condor CR, red wolf CR, black-footed ferret EN, Przewalski's horse EN, mhorr gazelle CR, Arabian oryx VU, European bison VU, American bison NT).However the IUCN does not list two species of Seychelles giant tortoises which were rediscovered recently surviving in human care.International studbooks for endangered and rare species are kept under the auspices of the World Association of Zoos and Aquariums (WAZA).