Pigs are highly intelligent animals with cognitive abilities comparable to dogs and three-year-old children. Understanding their cognitive capacity is essential for providing welfare that meets their psychological as well as physical needs.
Pig intelligence is not a novelty - it is a welfare obligation. An animal that can learn its own name, shows self-awareness, experiences empathy and forms social bonds is an animal that experiences boredom, frustration, loneliness and psychological deprivation as genuine welfare harms. Barren pig environments that prevent rooting, exploration, social choice and cognitive engagement cause real psychological suffering in animals capable of experiencing it. The welfare standard appropriate to pig cognitive capacity is not 'enough food and no pain' - it is an environment rich enough to engage their cognitive abilities, allow social choice and provide positive emotional experiences. This standard is achievable on commercial pig farms; it requires investment, but the welfare case is proportionate to the cognitive capacity of the animal.