Primates in captivity — whether in research, zoos, or private ownership — require exceptional care to meet their cognitive and social needs. Welfare failures in this group cause particular suffering.
Primate welfare in captivity is uniquely challenging because of the cognitive complexity of these animals. Primates in impoverished environments develop stereotypies, self-injurious behavior, and what researchers describe as primate depression — a withdrawal from engagement, reduced appetite, and lack of interest in social interaction. Meeting primate welfare needs requires species-appropriate social groupings, complex enrichment that changes regularly, large and naturalistic enclosures, and staff trained in individual behavioral monitoring. The cognitive sophistication that makes primates fascinating subjects of study is the same complexity that makes inadequate captivity so harmful to them.