Zoos justify their existence partly through conservation education — but evidence on whether zoo visits actually change conservation attitudes and behaviours is more limited than the industry claims, raising questions about this justification.
Zoo conservation education welfare justification requires honest evaluation of what evidence shows. Attitude change studies show real but modest effects; behavioural change evidence is sparse and smaller. This does not eliminate the education justification entirely — some welfare-positive outcomes do result — but it should temper claims that education alone justifies keeping animals in welfare-compromising conditions. The strongest welfare justification for zoos remains ex-situ conservation for genuine endangered species programmes.