The horses included in the section, "On-Track Break Downs," include any horses that had a serious injury that occurred during a race. Typically these horses broke down and collapse on the track. All but two of the horses were euthanized with most being euthanized on the track or shortly after being trailered out of the view of the public. Descriptions of each horse are provided after their name, as well as a picture of the horse with a confomational analysis to discover the harmful qualities that could explain their tragic injuries.