Western lowland gorillas live in complex harem social groups whose structure and management in captivity significantly determines welfare outcomes.
Lowland gorilla welfare in captivity is fundamentally determined by social group quality. Single silverback males without appropriate female groups cannot express their full social role. Females without supportive group dynamics and stable relationships show higher stress. The management of bachelor groups — males without reproductive opportunities — requires particular welfare attention, as these groups can be highly dynamic and stressful. Feeding enrichment must occupy sufficient waking hours — gorillas that eat through puzzle feeders rather than bowls spend time in natural foraging activity rather than stereotypic behaviour. High-quality gorilla welfare is expensive but achievable.