Hinnies are hybrid animals, produced by crossing a male horse with a female donkey. In some regions, they are also known as a "mule" or "hinny mule". Additionally, other synonyms for "hinnies" include "hinny-ass" or "jennet," a term which is used to describe a female hinny. In certain contexts, the word "burro" may also be used as a synonym for hinnies, though this term may apply to donkeys in general rather than specifically to hinnies. Whether they are called hinnies, mules, or other terms, these hybrid animals are valued for their strength and endurance, making them ideal work animals in many industries.