Animal magnetism, also known as mesmerism, is a historical concept that suggests a mysterious force exists between living beings. This idea was popularized in the 18th century by Franz Anton Mesmer, who believed that this force could influence health and behavior. Mesmer used techniques like hypnosis to tap into this energy, claiming it could heal various ailments. Although animal magnetism was once widely accepted, it has since been discredited by modern science. Today, it is often viewed as a precursor to the study of hypnosis and psychology, but the notion of a magnetic force connecting animals and humans lacks empirical support.