Pigs engage in play behavior when their basic needs are met. Understanding positive welfare indicators in pigs helps farmers and researchers assess and improve conditions.
Play behavior in pigs is a reliable indicator of positive welfare — animals experiencing chronic stress, pain, or fear do not play. The presence of play tells us welfare is adequate; its absence signals problems. Piglets in barren conventional systems show dramatically reduced play frequency compared to those with enrichment. This behavioral difference reflects real differences in neural development and emotional wellbeing. Positive welfare assessment that looks for play, exploration, and social affiliation provides a more complete welfare picture than monitoring only negative indicators like disease and injury.