How play behavior in pigs signals positive welfare and can be used as a farm assessment tool.
Pig play is both intrinsically valuable and scientifically useful. When pigs play, it confirms that their welfare is sufficiently positive for them to engage in non-essential behavior — a powerful indicator of psychological wellbeing. For farmers and auditors, play observation is an accessible welfare metric that requires no equipment and can be recorded during routine daily checks. The challenge is creating and maintaining conditions that support play: space, enrichment, stable social groups, and good health are all prerequisites. Systems that reduce play through crowding, stress, or illness are revealing a welfare deficit even before clinical signs emerge.