Decades of research have established that pigs are cognitively sophisticated animals, raising profound ethical questions about the conditions in which billions are farmed each year.
The cognitive complexity of pigs creates a sharp ethical tension with intensive farming practices. Animals capable of learning complex tasks, showing empathy-like responses, and forming long-term social relationships are confined in systems that prevent nearly every form of natural behavior. The behavioral science is not disputed — what remains contested is whether this cognitive complexity creates moral obligations that current practices violate. Welfare science increasingly argues that sentient, intelligent animals require not merely physical health but the opportunity to engage in the behaviors that define their nature.