A mule is the offspring of a male donkey and a female horse. Horses and donkeys are different species, with different numbers of chromosomes. Of the two F1 hybrids between these two species, a mule is easier to obtain than a hinny (the offspring of a male horse and a female donkey). All male mules and most female mules are infertile.
The size of a mule and work to which it is put depends largely on the breeding of the mule's dam. Mules can be lig...
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Mule
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