Pigs are among the most cognitively sophisticated farm animals. Understanding their intelligence and emotional complexity strengthens the ethical case for higher-welfare farming practices.
The cognitive and emotional sophistication of pigs creates profound ethical obligations that current farming systems largely fail to meet. Pigs are not simple stimulus-response machines but animals with rich inner lives — they experience boredom, joy, frustration, grief, and social bonds. The barren, overcrowded conditions of intensive pig farming deny these animals virtually every opportunity to express their cognitive and social capacities. Understanding pig intelligence is not merely academic — it directly informs what kinds of environments and treatment are ethically acceptable. A pig that can play video games and form lasting friendships deserves a farming system that acknowledges these capacities, not one designed as if they are inert protein-production units.