Scientific research on pig cognition reveals emotional and intellectual capacities that create strong welfare obligations for farming systems to provide appropriate mental stimulation and social environments.
The scientific picture of pig cognition has transformed dramatically over the past two decades, revealing an animal whose emotional and intellectual life is far richer than agricultural systems typically acknowledge. Pigs in barren, social isolation or overcrowded conditions are not simply inconvenienced — they experience the frustration of blocked cognitive and social needs at a level that current evidence suggests rivals that of companion animals we readily recognize as suffering. The ethical implications of this evidence are clear: farming systems that deny pigs opportunities for cognitive engagement, social stability, and exploration are causing suffering to animals whose capacities make that suffering morally significant.