Non-human primates present the most complex welfare challenges in captivity. Their cognitive abilities, social complexity, and space needs create high standards that are often unmet.
Primate welfare in captivity is uniquely challenging because of the species' cognitive complexity and social intelligence. A primate that is physically healthy but socially isolated, cognitively under-stimulated, or unable to express its social repertoire is experiencing profound welfare compromise. Research facility conditions, even when meeting minimum regulatory standards, often fail to meet the welfare needs of highly social, cognitively complex animals. The gap between regulatory minimum and genuine welfare provision is substantial. Welfare improvements for captive primates require not only environmental enhancement but honest assessment of whether the welfare costs of captivity are justified by the research or conservation benefit obtained. For great apes, where evidence of complex cognition is strongest, this assessment increasingly favours sanctuary or natural habitat over continued captive use.