Research on pig cognition reveals sophisticated mental abilities that have significant implications for how we evaluate the ethics of current pig farming practices.
The cognitive sophistication of pigs means that the welfare harms they experience in factory farming systems are not merely physical but also psychological. Pigs confined in barren, crowded environments without social complexity, mental stimulation, or the ability to perform motivated natural behaviors experience boredom, frustration, and chronic stress that their intelligence makes more acutely felt. The ethical weight of animal suffering scales with cognitive capacity, making pig welfare an urgent moral consideration.