Modern animal welfare science has moved beyond simply preventing suffering toward actively promoting positive experiences. For pigs — highly intelligent and emotionally complex animals — positive welfare represents a transformative goal for farming.
Positive welfare in pigs requires going beyond the elimination of pain and fear to actively cultivate conditions where pigs experience curiosity, play, social engagement, and comfort. Research using cognitive bias tests has demonstrated that enriched, well-managed pigs show optimistic cognitive states — approaching ambiguous stimuli as if expecting positive outcomes — while pigs in barren environments show pessimistic biases that indicate generalised negative emotional state. This constitutes strong scientific evidence that pigs' subjective experience of their environment matters morally. Practical positive welfare provision includes: varied enrichment that provides novelty and challenge, stable social groups that allow lasting social bonds, species-appropriate feeding that allows exploration and rooting, comfortable lying areas, and thermal comfort. The Welfare Quality assessment protocol and Five Domains framework both provide operational tools for measuring positive welfare in commercial pigs. Demand for higher-welfare pork products creates the market signal that drives producer investment in positive welfare conditions.