What is the basic definition of a mule?

The correct answer is that a mule is defined as a cross between a male donkey and a female horse. This hybridization results in a unique animal that inherits characteristics from both parent species. Mules typically exhibit the size and strength of a horse along with the endurance and sure-footedness of a donkey, making them particularly valuable as working animals in various agricultural and transport roles.

Mules are known for their intelligence and distinctive physical traits, such as long ears and a more robust body structure compared to horses. The reproductive aspect of mules is also interesting; due to the differing number of chromosomes in donkeys and horses, mules are generally sterile and cannot reproduce, which is a common characteristic of many hybrids.

Understanding this definition is crucial as it highlights the specific genetic contribution from both the male donkey and the female horse, distinguishing mules from other equine hybrids and different horse breeds. This precise parental combination is what defines a mule in the context of equine evaluation.