Positive Welfare Indicators in Pigs: Beyond Absence of Suffering

Identifying positive welfare states in pigs through play, exploration, and social bonding is essential for advancing beyond minimum welfare standards.

Key Facts

Play behaviour in pigs, including running, jumping, and social play, is a reliable indicator of positive welfare.
Pigs show optimistic cognitive bias when in positive welfare states, expecting positive outcomes in ambiguous tests.
Social bonding through nose-to-nose contact, huddling, and mutual grooming signals contentment.
Exploration of novel objects or environments indicates curiosity and low chronic stress.
Tail wagging in pigs, analogous to dogs, can indicate excitement or positive anticipation.
Welfare Quality protocols include assessments of positive social behaviours on commercial farms.
Providing rooting material reliably increases play and exploratory behaviour in pigs.

Welfare Considerations

Welfare science has increasingly moved from merely measuring suffering to actively promoting positive experiences. For pigs, this means designing environments that generate genuine positive states, not just the absence of negative ones. Farms that offer straw bedding, rooting material, and social stability see measurably more play and prosocial behaviour. The cognitive bias test provides an objective measure of positive welfare state. Consumer demand and retailer standards increasingly incorporate positive welfare indicators, pushing the industry toward environments where pigs can express natural joyful behaviours.

What You Can Do

Support farm certification schemes that require positive welfare indicators, not just absence of harm.
Ask food producers and retailers what positive welfare evidence they require from suppliers.
Learn to recognise play behaviour in pigs as a sign of good welfare when visiting farms.
Advocate for enriched housing standards that enable rooting, exploration, and social behaviour.
Donate to organisations researching and promoting positive welfare standards in pig farming.