Zoos justify animal captivity primarily through education and conservation contributions, but research on whether zoo visits produce lasting attitudinal and behavioral change shows more modest effects than institutional claims.
The education and conservation justification for keeping animals in captivity requires honest evaluation rather than institutional assertion. Research on zoo visitor learning shows more modest and less durable effects than zoo marketing suggests. Conservation contributions vary enormously between institutions. The welfare costs of captivity for individual animals are real and ongoing. This does not mean zoos are without value, but it does mean that welfare costs to individual animals must be weighed against genuine, evidence-based educational and conservation benefits rather than rhetorical claims. Holding zoos accountable to transparent reporting of conservation contributions and visitor learning outcomes allows consumers to discriminate between institutions making genuine contributions and those making rhetorical claims.