Pigs possess cognitive abilities comparable to dogs and young children, making cognitive enrichment a genuine welfare need that is largely unmet in conventional farming systems.
The cognitive sophistication of pigs has profound welfare implications for how they are housed. A pig in a barren concrete pen is not merely prevented from doing things — it is experiencing active cognitive frustration and boredom. The same intelligence that enables pigs to solve problems and remember individuals also enables them to suffer more from environmental monotony than cognitively simpler animals might. Enrichment that challenges pigs cognitively — novel objects, foraging tasks requiring manipulation, varied substrates — provides genuine welfare benefit beyond simple physical stimulation. Recognising pig intelligence as a welfare-relevant characteristic rather than an interesting scientific curiosity is a necessary step toward housing standards that take their mental experience seriously.