Mule Mule A mule is the offspring of a male donkey (jack) and a female horse (mare). Horses and donkeys are different species, with different numbers of chromosomes. Of the two F1 hybrids (first generation hybrids) between these two species, a mule is easier to obtain than a hinny, which is the offspring of a female donkey (jenny) and a male horse (stallion). The size of a mule and work to which it is put depend largely on the breeding of the mule's female parent (dam). Mules can be lightweight, medium weight or when produced from draft horse mares, of moderately
The Horse and the Donkey the Ass". This begins with the moral that is usually put into the mouth of the remaining animal in Classical versions: Illustrations from books from the 15th - 19th centuries The Horse and the Donkey The Horse and the Donkey is a variant of a fable type recorded since antiquity of which there is scarcely one version that concerns the same pair of animals. Included as one of Aesop's Fables and numbered 181 in the Perry Index, its Greek sources also include a donkey and a mule, while the story is told of an ox and a donkey in the