Converging evidence from behavioral neuroscience places pigs among the most cognitively sophisticated land mammals, with implications for the ethical evaluation of intensive farming systems that deny them complex behavioral expression.
The evidence for pig cognitive sophistication fundamentally changes the moral arithmetic of intensive farming. A cognitively complex animal confined in a barren pen does not merely experience physical discomfort - it experiences the frustration of unmet drives for exploration, problem-solving, and social complexity. The capacity for self-recognition and empathy in pigs suggests that they may have a self-concept and the ability to experience their situation as specifically their own suffering. Welfare science that documents pigs' intelligence is not merely academic - it carries direct implications for the minimum standards we should require of farming systems that house them.