The Cowboys rig. Cowboys usually own several horses so they need a trailer to carry them around. And the whole rig is often driven off road and on beat up dirt roads. Everything takes a beating and doesn't last very long.
Cowboys shoe their own horses. It's just one of the many skills they have to learn.
After a long hot 12 hour day In the saddle the cowboy has to come back and take care of his horse which is not helped by the horse leaning on you and nibbling at your hair.
But the horse seemed to think the whole thing was pretty funny.