Primate enrichment in zoos has evolved from simple food provision to complex cognitive challenges that engage species-appropriate problem-solving and social behaviours.
Primate cognitive enrichment recognises that behavioural enrichment must match the intellectual capacity of the species - providing simple foraging enrichment to a chimpanzee is like giving a child a toy designed for a toddler. Meaningful enrichment for primates requires novelty, appropriate challenge level, social complexity, and opportunities to use natural cognitive repertoires (tool use, social manipulation, food processing). The welfare benefit is measurable: reduced stereotypic behaviour, increased activity diversity, higher time budgets on natural behaviour categories and lower cortisol in well-enriched primates. Designing effective primate enrichment requires understanding species ecology, social structure and cognitive capacity - general 'enrichment' without species specificity is insufficient.