Pigs engage in elaborate play behaviors when conditions allow, including social play, object play, and locomotor play. Enabling play is a marker of positive welfare that most commercial systems fail to provide.
Animal welfare science is increasingly recognizing that good welfare means more than the absence of suffering; it also means the presence of positive experiences. Pig play is a clear example of a positive welfare state. When piglets chase, wrestle, and manipulate objects, they are expressing curiosity, vitality, and social engagement. Commercial pig farming rarely creates conditions where these behaviors can occur. Enrichment programs that enable play benefit not only welfare but also production outcomes, as play-enriched pigs show better growth and less aggression. Measuring and reporting play frequency should become a standard welfare metric for pig farms.