For decades, veterinarians relied on vital signs (heart rate, blood pressure) to gauge pain. But prey animals hide weakness. The breakthrough? Observing posture, facial expressions, and gait. The "grimace scale" for rats, rabbits, and cats—validated by animal behaviorists—uses ear position, whisker tension, and orbital tightening to score pain with higher accuracy than a heart rate monitor.
Animal behavior and veterinary science are closely related fields that aim to understand and improve the health and well-being of animals. zoofilia pesada com mulheres e 19 better