Welfare science has moved beyond preventing suffering to actively promoting positive emotional states in pigs. Evidence for pig emotions is scientifically robust.
The scientific evidence for rich emotional lives in pigs is now compelling. Pigs experience boredom, frustration, curiosity, and joy. Moving welfare assessment toward positive states - not just absence of suffering - changes the ethical horizon for pig farming. Positive welfare systems are achievable and economically viable in higher-welfare production models.