Polar bears in captivity face some of the most acute welfare challenges in the zoo world, given the mismatch between their wild ranging behavior and what zoos can realistically provide.
Polar bear welfare in captivity is one of the clearest cases where the welfare costs of exhibition are difficult to justify. These animals evolved for vast Arctic ranges and ice environments that no zoo can replicate. Stereotypic pacing — walking the same path repeatedly in a repetitive, seemingly purposeless way — is a reliable indicator of psychological suffering and is consistently documented in captive polar bears. While some zoos argue their educational value justifies the welfare cost, the prevalence and persistence of stereotypies in even enriched exhibits suggests fundamental welfare limitations that cannot be overcome by better management alone.