Polar bears in captivity face profound welfare challenges driven by their vast natural ranging requirements, specialized ecological adaptations and the psychological complexity associated with their high intelligence.
Polar bears represent one of the starkest examples of the fundamental conflict between captive keeping and animal welfare. Their natural ranging behavior, evolved for a landscape measured in hundreds of thousands of square kilometers, is impossible to approximate in any zoo setting. The extraordinarily high rates of stereotypic pacing observed in captive polar bears — affecting the majority of individuals in many facilities — are a clear behavioral indicator of chronic psychological distress. Some zoological institutions have concluded that polar bear welfare cannot be adequately met in captivity and have phased out their programs. Others have invested substantially in large, enriched enclosures that reduce but cannot eliminate the welfare deficit inherent in this species captivity.