E received this book as one of her awards at the Arabian Nationals Horse Judging contest a couple of years ago.
I started reading it then and it was very interesting in how it described different horse personalities. The author discussed 4 main personalities: social, fearful, aloof and challenging, then combinations of the 4 types.
The Aloof Horse:
"The aloof horse is easiest to define by what he doesn't do. Aloof types interact much less than any of the other types do, and at times this horse may seem to be in his own little world. He will frequently seem detached or removed from his present environment, to the point of being disassociated from it. Owners of aloof horses frequently notice this detachment or distance, as if their horse had an invisible barrier around him. It may appear that your aloof horse is paying very close or studious attention to almost nothing at all."
I think this describes Hank to a tee. All in all, an interesting read, especially if you have has several horses. It is fun to guess what category they would be in.