Advances in pig cognitive science have transformed our understanding of what pigs need. Translating this science into practical enrichment requirements is a key challenge for welfare advocates.
The cognitive science of pigs has outpaced the welfare standards that apply to their farming. Animals demonstrated to use mirrors for self-directed behavior, communicate through symbols, and experience emotional contagion deserve enrichment environments that match this complexity. Current EU enrichment requirements are a minimum — pigs need manipulable materials, novel objects rotated weekly, social diversity, foraging challenges, and problem-solving opportunities to match their cognitive abilities. Play behavior in young pigs — which includes chasing, play-fighting, and object manipulation — is a sensitive welfare indicator. High-play environments correlate with better growth, lower aggression, and more positive cognitive bias scores. Pig enrichment science is advancing rapidly; regulation lags.