In a Colorado town, the impossible has occurred.
A mule has had a baby.... well, what to call it? You see, mules can't have babies. A cross between a female horse and a male donkey, a mule has an odd number of chromosomes, and can't therefore reproduce.
Oh yeah? says Kate, the black mule, who managed the feat somehow. Read about it at the Denver Post.
Meanwhile, did you know there's an old Brazilian myth about the Headless Mule? This is a form of curse put upon a woman for certain sins; she turns into a headless mule Thursday at sundown till Friday sunrise. Wikipedia will help you out there.
And here's a South Carolina folktale about a talking mule.