Bears in zoos have historically been kept in concrete-and-moat exhibits that prevented expression of natural behaviors. Modern welfare science has transformed bear husbandry, though significant challenges remain.
Captive bear welfare has improved dramatically from the barren concrete exhibits of mid-20th century zoos, but bears remain among the most difficult species to keep well in captivity due to their enormous natural ranges, seasonal behavioral cycles including hibernation, and omnivorous foraging complexity. Stereotypic behaviors, once considered inevitable in captive bears, are now recognized as indicators of inadequate welfare that can be substantially reduced through environmental enrichment and habitat complexity. The welfare case for bear captivity must be assessed against conservation value on a case-by-case basis.