BBC NEWS | Science/Nature | Morocco's miracle mule A mule has given birth to a male foal in a hamlet deep in rural Morocco.
No big deal, you may think, but in fact the birth was a minor scientific miracle.
A mule is the hybrid of a horse and a donkey and should be sterile - except in this instance.
There have only been two substantiated cases of a mule giving birth in the past quarter century: one in China in 1988 and the other also in Morocco in 1984.