Research on pig cognition has revealed problem-solving abilities, emotional complexity, and social intelligence comparable to dogs and some primates, with profound implications for how farming systems should be evaluated.
The cognitive research on pigs creates an evidence-based moral imperative to improve their welfare in farming systems. Animals capable of pessimistic emotional states, empathy, play, and self-recognition are experiencing something morally significant when housed in barren, crowded conditions. The intelligence of pigs means that environmental impoverishment is not merely physical deprivation but psychological deprivation — a distinction that matters for welfare. Research findings on pig cognition have been central to advocacy for enrichment requirements and group housing because they demonstrate that the animals being harmed have rich inner lives. The challenge is translating scientific findings into regulatory and consumer pressure for systemic change.