Zoo welfare science is developing tools to measure positive welfare states - happiness, engagement, and thriving - rather than merely measuring absence of suffering. This shift transforms what good zoo management means.
The shift toward positive welfare assessment in zoos represents a fundamental philosophical advance that raises the ambition of captive animal management. Rather than asking only whether animals are free from suffering, positive welfare science asks whether animals are experiencing good lives - with engagement, choice, social connection, and behavioral richness that constitutes genuine flourishing. For zoo managers, this means the welfare benchmark is not an absence of visible distress but the presence of measurable positive states. Institutions that invest in complex environments, behavioral diversity, and management that provides animals with genuine agency and choice are pursuing genuinely positive welfare - not just welfare minimization.