Wolverines are solitary, far-ranging predators whose welfare in captivity is exceptionally difficult to meet given their enormous territorial needs and asocial nature.
Wolverines represent an honest welfare challenge that many zoos have wisely declined to take on. Their territorial needs are simply incompatible with any realistic zoo enclosure size. The stereotypic pacing seen in captive wolverines is a direct indicator of spatial deprivation that cannot be meaningfully remedied in a zoo context. Facilities that maintain wolverines have a particular obligation to provide maximum space, cold temperatures, and extensive enrichment to partially compensate for the fundamental mismatch between species needs and captive reality.