Pigs are among the most cognitively sophisticated farm animals, with documented problem-solving, social learning, and emotional complexity that makes their standard farming conditions a particular welfare concern.
Pig intelligence makes the welfare implications of barren intensive farming systems particularly severe. A cognitively sophisticated animal confined to a concrete pen with nothing to investigate, explore, or manipulate exists in a state of profound frustration. Behavioural research consistently shows that pigs given access to enrichment materials, puzzle feeders, and space to explore are calmer, healthier, and show fewer aggression-related injuries. Their capacity for positive experiences — play, curiosity, social bonding — is as relevant to welfare assessment as their capacity for negative ones. Enrichment is not a luxury for pigs; it is a biological necessity.