Have I always worried about the super compliant horses with that drooping head, YES. Have I wondered about horses who seem to have no personality; YES. Some people think when they chase their horse and shake rocks it makes the horse play; i don’t know about that. Some people think when a horse misbehaves that it actually knows better and is getting even; i don’t think so. http://connectiontraining.com/phew-its-ok-to-be-anthropomorphic/
Some people think when a horse ignores their cue that he is mad; i don’t know about that.
Have a thought that when a horses friend dies it gets depressed; YES.