Draft mules- the cross breeding of draft horses and donkeys. Not only are they tall and stocky, but they have ears that can be almost 2 feet long. Truly quite the unit! :
What are mules shoes and how do you wear them?
Mule's foal fools genetics with “impossible” birth – The Denver Post
Why Can't Mules Have Babies? - YouTube
Donkey vs. Mule vs. Hinny: A Look at the Differences - Helpful Horse Hints