Wild instincts and his panic run for to save his life cost Dan more than he might have thought possible. His run for freedom had Dan want to be alive and as an animal, more than being a simple pony having human mind and wits.
His instincts took active control, as from this his mind became simpler, thinking was more of things very basic to his wants, wishes, or needs.
His wandering brought him to join a horse breeding farm, where as a virile young stud his sensual lust and exceptional maleness became both his and the farm's pride or asset.
The cares for his loving parents and that ruthless sister faded away, he thought then only of his bodily comforts, and on the occasion of some lovely conquest.