Eight bear species are kept in zoos worldwide, each with distinct welfare needs - space, diet, denning, and social requirements that vary significantly between species.
Bear welfare in zoos varies enormously by species and facility quality. Polar bears suffer most visibly from space constraints - their vast natural home ranges (thousands of square kilometres for males) cannot be approximated in any zoo enclosure, and stereotypic pacing affects a majority of captive polar bears. Sun bears face different challenges: their specialist foraging behaviour for insects and honey requires complex enrichment to replicate. Brown bears in well-designed exhibits with pools, foraging opportunities, and adequate complexity can achieve reasonable welfare. The conservation justification for keeping bears that suffer chronically in captivity requires rigorous ethical scrutiny.