Sumatran tigers are Critically Endangered, making their zoo populations potentially important for species survival. Yet their welfare in captivity raises serious questions about enclosure adequacy, enrichment, and the ethical justification for keeping large felids in zoo settings.
Tiger welfare in zoo settings is a microcosm of the broader tension between captive conservation value and individual animal welfare. Sumatran tigers are sentient, cognitively sophisticated predators whose natural behavioural repertoire — stalking, ambushing, patrolling vast territories, complex prey interactions — is severely constrained in captivity. Stereotypic pacing, when it occurs, is not merely a sign of boredom but a marker of frustrated motivation: the tiger's internal drive to patrol, hunt, and explore is pushing against the physical limits of its enclosure. Good welfare for captive tigers requires substantial investment in complex, varied, large enclosures with multiple habitat elements, rotating enrichment programmes that maintain novelty, and management strategies that respect the solitary nature of tigers (conflict between incompatible individuals is a significant welfare risk). The moral justification for keeping tigers in captivity rests substantially on conservation contribution — and that justification erodes rapidly for facilities where welfare is inadequate and no meaningful conservation work occurs.