Western gorillas are highly intelligent great apes living in complex family groups. Zoo welfare requires extensive space, stable family structure, and cognitive enrichment appropriate to their remarkable intelligence.
Gorilla welfare in zoos requires not just physical space but psychological engagement at the level appropriate for animals with human-comparable intelligence. Gorillas in barren environments develop stereotypic behaviors including regurgitation and reingestion that indicate chronic frustration. Providing cognitive enrichment — foraging puzzles, novel objects, training sessions, and media exposure — engages their intelligence and reduces boredom. Stable family structure is fundamental: removing individuals from established groups causes behavioral disruption across all remaining members. The welfare of zoo gorillas is also shaped by the quality of keeper relationships, as individual bonds with familiar carers provide important social support.