Research into pig problem-solving and cognitive abilities reveals a level of intelligence that carries significant welfare implications.
The cognitive sophistication of pigs means that they experience cognitive deprivation acutely when housed in environments that provide no mental challenge. A species capable of complex problem-solving, observational learning, and deception placed in a barren concrete pen with no enrichment is experiencing cognitive poverty analogous to placing a human in sensory deprivation. The evidence for pig intelligence is not merely fascinating - it creates moral obligations that most production systems fail to meet. Cognitive enrichment that provides genuine challenges appropriate to pig intelligence improves welfare and reduces the aggressive behaviors that result from cognitive frustration.