Pigs are highly intelligent animals with cognitive abilities comparable to dogs and primates. Understanding their intelligence has direct implications for the welfare standards they deserve.
The cognitive capacities of pigs create strong ethical obligations that conventional farming practices do not fulfil. An animal capable of metacognition, mirror self-recognition, and complex social learning experiences environments, pain, and confinement with a depth of awareness that demands moral consideration. The contrast between pig intelligence and the environments in which most pigs are farmed — barren concrete, physical restriction, routine painful procedures without anaesthesia — represents a significant ethical gap. Welfare science linking cognitive enrichment to positive emotional states provides a direct welfare improvement pathway. Pigs provided with learning tasks, novel environments, and complex social interactions show measurable positive affective states. Consumer and policy pressure is the most effective lever for improving pig welfare at scale given the entrenched economics of intensive pork production.