Sumatran tigers are the last surviving Indonesian tiger subspecies and one of the most critically endangered large cats on Earth, with zoo populations playing a genuine conservation role while presenting the welfare challenges common to all captive felids.
Sumatran tigers in well-managed zoos occupy a morally complex but defensible welfare position. The conservation imperative is genuine — the wild population is critically small and zoo genetic reserves have real value for potential future reintroduction programs. The welfare challenges are those common to all solitary, wide-ranging felids: no enclosure can provide the space and behavioral complexity of a wild tiger territory. However, large, naturalistic enclosures with appropriate enrichment, competent keepers, and proper diet can provide tigers with reasonable welfare. The welfare obligation extends to ensuring tigers are not simply displayed but are managed with genuine attention to behavioral and psychological needs — not just physical health.