Scientific evidence for pig sentience, empathy, and emotional complexity has grown substantially. Understanding these capacities is fundamental to evaluating how we treat them.
The evidence for pig sentience and emotional complexity creates a profound ethical obligation to reconsider how over 1 billion pigs are kept and killed globally each year. A species that demonstrates empathy, optimism/pessimism responses, mirror self-recognition, and complex social bonds is not a simple machine indifferent to its own experience. The gap between what we know about pig cognition and emotion and the conditions in which pigs are kept in intensive production is one of the most stark ethical contradictions in contemporary food production. Closing that gap requires not only technical welfare improvements but a fundamental cultural shift in how pigs are perceived: not as pork production units but as sentient individuals with interests in their own lives.