Pig Positive Emotions and Welfare Indicators

Pigs are capable of positive emotional states including joy, anticipation and contentment. Facilitating these states is part of positive welfare.

Key Facts

Pigs show play behaviour including chasing, jumping and wrestling in enriched conditions
Anticipatory positive affect is visible before food rewards or access to preferred areas
Pigs wag their tails in positive contexts - analogous to but distinct from dog tail wagging
Cognitive bias tests show pigs in positive welfare states are more optimistic in ambiguous situations
Playful behaviour correlates with other positive welfare indicators including lower aggression
Tickling pigs elicits positive affect including approach behaviour and vocalisations in studies
Social play is an important component of pig positive welfare that group housing facilitates

Welfare Considerations

Recognising and facilitating positive emotional states in pigs moves welfare beyond mere prevention of suffering. Pigs in enriched, social environments experience joy and contentment that represent genuine welfare value. Management systems that prevent these positive states impose a welfare cost even when they avoid obvious physical suffering. Positive welfare is increasingly included in welfare assessment and should be standard in welfare assurance schemes.

What You Can Do

Choose pork from systems providing enrichment and social housing that enable positive emotions
Support certification schemes requiring positive welfare indicators alongside absence of suffering
Advocate for positive welfare standards in farm animal welfare legislation
Share information about pig emotional complexity to raise awareness of their capacity for positive welfare