Anne, for some reason this mule story brings 'Delaney's Donkey' to mind:
youtu.be/bjrwftI31gc
The muscles of the mighty never known to flinch
They couldn't move the donkey a quarter of an inch
Delaney lay exhausted hanging 'round his throat
With a grip just like a Scotchman on a five pound note
-Val Doonigan