European scientists have created an AI algorithm to interpret pig sounds, aiming to enhance animal welfare by identifying negative emotions in pigs. The algorithm could alert farmers to potential stressors, providing a tool for improving welfare and potentially labeling farms based on the pigs' emotional states, as revealed by grunts, oinks, and squeals. The research indicates that pigs from free-range or organic farms produce fewer stress calls, highlighting the importance of emotional well-being in addition to physical condition. The algorithm, once fully developed, will be accessible to farmers through an app, helping them monitor their pigs' emotions and assist consumers in choosing farms.