Are mule pregnancies really longer than equine pregnancies? Comparison between mule and equine pregnancies - Boakari - 2019 - Reproduction in Domestic Animals - Wiley Online Library
About Equine Crosses, Mules, and Other Hybrids - PetHelpful
Can Mules Reproduce? History Says Yes! - Helpful Horse Hints
Befuddling Birth: The Case of the Mule's Foal : NPR
Hinny - Wikipedia
Hinny Vs Mule: Are They Same Or Different? Differences Revealed! | Kidadl
What Is the Difference Between Mules and Donkeys?
Did Humans Create Mules?
Looking for Donkey Facts? Here are 43 Interesting Facts About Donkeys • Storyteller Travel
Mule Facts
Mule Facts
How do donkeys look like the mule? - Quora
Mule's foal fools genetics with “impossible” birth – The Denver Post
Befuddling Birth: The Case of the Mule's Foal : NPR
Donkey - Wikipedia
About Equine Crosses, Mules, and Other Hybrids - PetHelpful
Befuddling Birth: The Case of the Mule's Foal : NPR
Mule Facts
About donkey breeds | The Donkey Sanctuary
Looking for Donkey Facts? Here are 43 Interesting Facts About Donkeys • Storyteller Travel
Of Jacks and Jennets: Facts About Donkeys - The New York Times
