The scientific understanding of farm animal sentience has advanced dramatically in recent decades, establishing that cattle, pigs, chickens, and fish have sophisticated emotional lives and the capacity for meaningful welfare experiences.
Farm animal sentience science has fundamentally challenged the view that production animals are automata incapable of meaningful experience. Pigs demonstrate cognitive sophistication comparable to dogs in many experimental contexts. Chickens show emotional contagion and future planning. Cows have individual personalities and show excitement when solving cognitive problems. Fish experience pain through nociceptors and opioid systems structurally similar to those in mammals. This scientific consensus should inform welfare standards that currently lag far behind the evidence, with billions of animals kept in conditions that deny the expression of their established cognitive and emotional capacities.