of Hinny
Source: Webster's dictionaryIt is commonly believed that mules are more easily handled and also physically stronger than hinnies, making them more desirable for breeders to produce, and it is unquestioned that mules are more common in total number. Source: Internet
Like other inter-species hybrids, mules and hinnies are usually sterile. Source: Internet
Mules are much more common than hinnies. Source: Internet