Developing reliable pain recognition skills in farm animals enables timely intervention and better welfare outcomes across cattle, sheep, pigs, and poultry.
Pain recognition in livestock is an essential welfare skill that has been significantly improved by the development of validated pain assessment tools. Grimace scales that rate facial expressions associated with pain have been validated across multiple species, providing objective assessment criteria. Because prey animals hide weakness as a survival strategy, obvious behavioral signs of pain often indicate advanced illness. Training farm workers and veterinarians to recognize subtle changes in posture, facial expression, social behavior, and appetite enables earlier detection and intervention. This benefits both animal welfare and farm economics by allowing treatment before conditions become severe.