Horsensei
Horsensei, pronounced “horse sen-say,” is a triple entendre—three meanings that all fit together. First, the word holds the idea of horse sense, our common term for common sense. Sensei means teacher in Japanese. In equine experiential learning, the horse sensei is both the horse herself as a teacher of humans and the human who teaches with horses
Horsensei Equine-Assisted Learning and Therapy (HEALTh) programs draw upon the strength, sensitivity, and magic of the horse to teach basic life skills and transformative attitudes and behaviors to humans.
http://www.horsensei.com/publications/MythologyofHorses/index.html
Day mares and night stallions - Archetypes in the mythology of horses and horse dreams.