Enrichment programs for zoo animals are most effective when grounded in species-specific behavioral biology and evaluated for actual welfare impact rather than assumed benefit.
Evidence-based enrichment represents the application of scientific methodology to welfare improvement. Providing an enrichment object is not sufficient — demonstrating that the enrichment actually improves behavioral indicators of welfare is the scientific standard. This distinction matters because poorly designed enrichment may be aesthetically reassuring to human observers while providing minimal behavioral benefit to the animal. Zoos that systematically evaluate enrichment effectiveness through behavioral observation are investing in genuine welfare improvement; those who provide enrichment without evaluation may be achieving less welfare impact than they assume.