Research on pig cognition reveals problem-solving abilities, emotional complexity, and self-awareness that strengthen the welfare case for improving conditions in intensive production systems.
Pig intelligence research matters for welfare because it establishes the depth of experience at stake in welfare decisions. An animal capable of complex problem-solving, social learning, and emotional responsiveness can experience richer suffering and frustration in poor conditions, and richer wellbeing in enriched ones. The finding that pigs are emotionally contagious means that distressed individuals in a group spread distress through the group — a welfare multiplier effect. Conversely, calm, enriched animals in stable social groups create positive behavioral contagion. Understanding pig intelligence makes the welfare case for enriched housing, stable social groups, and positive human-animal interaction more compelling.