Positive Emotional States in Pigs

Research on positive emotional states in pigs has revealed that animals in good welfare conditions experience joy, curiosity, playfulness, and satisfaction — states that welfare management should actively promote.

Key Facts

Play behaviour in pigs indicates positive affective states and is measurably reduced in poor welfare conditions
Pigs show optimistic cognitive bias — interpreting ambiguous stimuli positively — when housed in enriched environments
Anticipatory behaviour when expecting rewards indicates positive emotional engagement in pigs
The Five Domains model explicitly includes positive mental states as a welfare goal alongside freedom from suffering

Welfare Considerations

Positive pig welfare science has moved beyond the absence of suffering toward the active presence of pleasurable experiences. Pigs in good welfare conditions play, explore, root enthusiastically, and show bright-eyed curiosity about novel stimuli. These positive states are not merely pleasant additions to adequate welfare but are indicators of animals living flourishing lives. Farm management that enables positive states — through adequate space, enrichment, stable social groups, and positive human contact — produces measurably different animals than management focused solely on avoiding obvious suffering.

What You Can Do

Support certification schemes that measure positive welfare indicators including play frequency
Advocate for positive welfare promotion as an explicit goal in livestock welfare standards
Choose products from farms investing in environments that enable positive emotional states
Support research into positive welfare measurement across livestock species