Well, this isn't exactly a mule. The scientific name for this sturdy workhorse is Przhevalsky horse. They're damn amazing in the field. Can work days on end at 12000 ft. Also, some of em have nasty characters and, normally, you don't imagine like having a mindless stroll behind it. It might be suicidal at times. One guy got kicked just above the kneecap. Been out for 10 days. Also, they like to use their teeth and the wild ones may use front hooves as well. Sneaky bastards.
This one's been mine and as reluctant as me that frigid morning. Understandbly so.