Positive welfare science seeks to identify and promote experiences of pleasure, play, and positive affect in pigs — going beyond merely preventing negative states to actively enabling animals to thrive.
Positive welfare science represents an important expansion of how we think about farm animal welfare. The traditional focus on preventing suffering — preventing hunger, pain, fear, and disease — is necessary but insufficient. A pig free from suffering but confined in a barren environment with no opportunity for play, exploration, social interaction, or problem-solving is not thriving, even if technically meeting basic welfare standards. Research using optimistic cognitive bias tasks provides objective evidence that enriched environments produce genuinely positive affective states in pigs — not just less negative ones. This matters because it validates enrichment provision as a welfare good in itself, not merely a tool for preventing injurious behaviour. Practical positive welfare interventions for pigs include varied organic enrichment that changes over time to maintain novelty, social housing in stable groups that allows play and social grooming, outdoor access or large outdoor areas that provide environmental complexity, and positive human-animal interactions that allow pigs to approach rather than flee from stockpeople. Farms aiming for positive welfare rather than mere welfare adequacy produce better animals and demonstrate what sustainable, ethical food production can look like.