Always remember that feeling of looking at a big, open country over the ears of a good horse, seeing a new trail unwind ahead of you, and that ever-spectacular view from the top of the ridge!!! Follow my training blog: http://robertsontraining.blogspot.com/
Looks like in the beginning he just wanted to play with the bull, but got serious when bull went after the trainer. Don't know if he's trained, tho, but have seen Arabs doing doma vaquera.
I'll search for Merlin