Sumatran orangutans are critically endangered with fewer than 14,000 individuals remaining. Zoo populations play an important conservation role but welfare requires meeting their complex cognitive and social needs.
Orangutan welfare in zoos requires complex three-dimensional environments that allow climbing, foraging, and choice of social interaction. Cognitive enrichment through puzzle feeders, novel objects, and choice-making opportunities is not optional but essential for psychological wellbeing in this highly intelligent species. Social management must balance their semi-solitary nature with companionship needs — forced cohabitation or isolation both compromise welfare. Orangutans in well-managed zoo environments develop individual personalities and long-term relationships with skilled keepers.