Research into pig intelligence demonstrates cognitive capabilities that strengthen the case for enriched environments in commercial pig production.
The cognitive complexity of pigs makes barren housing particularly harmful. Intelligent animals in environments with nothing to do suffer specific boredom and frustration harms beyond the physical. Enrichment that engages pig cognition through novel objects, rooting substrate, and problem-solving challenges dramatically improves welfare at modest cost. This is a well-evidenced, implementable welfare intervention.