Bears in captivity show some of the highest rates of stereotypic behavior of any zoo species, reflecting the profound challenge of meeting their behavioral needs for wide-ranging foraging, denning, and environmental complexity in zoo environments.
Bears present one of the most challenging welfare scenarios in modern zoos because their natural ecology — wide-ranging omnivory across diverse landscapes — is nearly impossible to replicate in any captive setting. Stereotypic pacing indicates that the animal is experiencing spatial and behavioral frustration that enrichment cannot fully resolve. Well-resourced zoos have made genuine advances through larger, more complex habitats, foraging enrichment, and denning structures, but the fundamental welfare gap between wild bear life and zoo captivity remains large. This is particularly acute for sun bears and other tropical species with no seasonal behavioral rhythm to structure captive management around.