Pigs are among the most cognitively complex farmed animals, and group housing with adequate enrichment provides welfare benefits that individual confinement cannot.
The cognitive sophistication of pigs makes their behavioral and social environments critically important for welfare. Pigs confined individually or in barren group pens without enrichment show high rates of stereotypic behavior including bar-biting, rooting at concrete floors, and aggression. By contrast, pigs in enriched environments with rooting substrate, manipulable objects, and space for social navigation show positive behavioral indicators including play, exploration, and relaxed resting postures. Research has consistently shown that environmental enrichment reduces aggression and tail-biting, major welfare problems in conventional production. The business case for enrichment is strengthened by reduced veterinary costs, better feed conversion in less stressed animals, and premium market access.