Evaluating the conservation contribution of modern zoos helps assess whether their welfare costs are justified.
The conservation justification for zoos is more limited than zoo marketing suggests. Most zoo animals are not endangered, and the connection between captive animals and wild conservation is often tenuous. Successful reintroduction programs exist but are rare. The welfare costs of captivity for cognitively complex animals must be weighed against genuine conservation benefit — which requires honest accounting rather than assumed contribution.