Wolverines are among the most challenging animals to keep in zoos, requiring vast territories in the wild and exhibiting severe welfare deficits in inadequate captive settings.
Wolverine welfare in captivity is one of the most difficult challenges in zoo husbandry. These wide-ranging, solitary, cold-adapted predators are profoundly unsuited to traditional zoo enclosure design: the extraordinary stereotypy rates documented in wolverines in inadequate enclosures reflect the deep mismatch between their behavioral needs and what most facilities can provide. The facilities that achieve acceptable wolverine welfare tend to share common features: very large enclosures with complex three-dimensional structure, cold temperature management, complete solitary housing, and intensive enrichment programs that provide daily foraging challenge. Given these requirements, the question of whether keeping wolverines in zoos is ethically justified — given the welfare costs — is one that progressive institutions are actively debating.