Gorillas are the largest living primates, with complex social structures and psychological needs that make captive welfare extremely demanding and require sustained, specialized management.
Gorillas that engage in regurgitation and reingestion are exhibiting a behavioral abnormality directly linked to welfare deficiencies in the captive environment — specifically inadequate foraging opportunity. The behavior is self-reinforcing and difficult to reverse once established. Cardiovascular disease in captive male gorillas — affecting the majority of adult males — has no single identified cause but is associated with stress, diet, and reduced physical activity compared to wild counterparts. The complexity of gorilla social dynamics means that poorly managed group compositions cause chronic stress from social tension. Isolation of individuals for management reasons causes psychological distress. Well-managed gorilla facilities with large foraging areas, naturalistic social groups, and behavioral management programs demonstrate that high welfare is achievable.