Gorillas are highly intelligent great apes with complex social needs, requiring substantial investment in enclosure design and group management.
Gorilla welfare in captivity is demanding because these animals have exceptionally complex social and cognitive needs. Regurgitation and reingestion — a stereotypy not seen in wild gorillas — is highly prevalent in zoo populations and is associated with dietary restriction, social stress, and limited foraging opportunity. It indicates chronic negative affect. The best captive gorilla programmes provide large outdoor spaces with vegetation, complex foraging opportunities requiring physical and cognitive effort, stable social groups with appropriate age and sex structure, and minimal disruption from public viewing. Sanctuaries working with orphaned gorillas rescued from the bushmeat trade face the additional challenge of behavioural rehabilitation — young gorillas deprived of normal social development require years of skilled care before integration with established groups.