I remember watching this episode of Mutual of Omaha's Wild Kingdom as a kid. Watching now, brought back many old memories. I also see how fake the show was to of course. There is a pretty nice mule in this video, with a long trot on him that's pretty impressive.
Thought some might enjoy:
https://www.youtube.com/watch?v=vfSj7Ozx5bk
Thought some might enjoy:
https://www.youtube.com/watch?v=vfSj7Ozx5bk