Siamangs are the largest gibbons and live in tightly bonded family groups with complex vocal communication that must be supported in zoo settings.
Siamang welfare in zoos depends fundamentally on maintaining intact family groups and providing sufficient space and infrastructure for brachiating locomotion. Separating family members, particularly established pairs, causes significant behavioral distress. Acoustic enrichment opportunities including allowing natural calling behavior — rather than suppressing it — support psychological wellbeing. Conservation breeding contributes to population management for this endangered species.