The science of positive emotions in pigs is advancing rapidly, enabling farm-level implementation of management practices that create genuine positive welfare states rather than merely reducing suffering.
The science of positive emotions in pigs has moved from theoretical possibility to practical measurement framework within the past decade. We now have validated tools — ear position scoring, play behavior frequency, cognitive bias testing, and social bond indicators — that enable assessment of positive welfare states rather than only negative states avoided. This represents a conceptual shift with profound practical implications: farm management aiming for positive welfare actively provides play opportunities, social stability, positive human contact, and environmental variety rather than only eliminating hunger, disease, and injury. Farms that have implemented positive welfare programs report not only improved animal welfare indicators but often improved productivity through reduced aggression, better growth efficiency, and lower disease burden.