While they can mate and produce live young, the resulting offspring will almost always be sterile. The mule is a biological end-point, not a new species—a true miracle of the barnyard. Disclaimer: Always consult a licensed veterinarian before attempting to breed horses and donkeys. Size mismatches can lead to fatal injuries.
A: A mare (horse) pregnant with a mule foal gestates for 11 to 13 months (average 340 days). Jenny (donkey) pregnancies are similar, around 12 months. Conclusion: A Delicate Biological Dance The act of a horse mating a donkey is a testament to the flexibility of nature and the ingenuity of human domestication. While the two species are genetically separated by a mere two chromosomes, their union produces the legendary mule—an animal that possesses the best traits of both worlds. Horse Mating Donkey
Introduction: An Ancient Union