How scientific understanding of pig intelligence informs our moral obligations to improve their welfare.
The evidence for pig cognitive sophistication is now substantial enough to demand serious moral consideration. Pigs that can recognize themselves in mirrors, play video games, manipulate their environment, and comfort distressed companions are experiencing subjects in a meaningful sense — not mere biological machines. This cognitive richness means that the deprivation of standard commercial pig housing — bare concrete, minimal social choice, no rooting substrate — involves frustration of mental as well as physical needs. Closing the gap between what we know about pig minds and how we treat them is one of the most pressing welfare challenges in modern food production.