Donkey

A donkey or mule is a creature found or mentioned throughout the wastelands.

Background
Some mules or donkeys survived the war, serving as labor on farms. A man named Irwin will share information with the Vault Dweller about his donkey, Pugsley, who was killed by raiders.

Appearances
Donkeys and mules are mentioned in Fallout, Fallout: New Vegas, Fallout 4 and its add-ons.

Behind the scenes
The donkey from Fallout is commented upon in the Fallout Bible.