Donkey
Donkeys can interbreed with other members of the family Equidae, and are commonly interbred with horses. The hybrid between a jack and a mare is a mule, valued as a working and riding animal in many countries. Some large donkey breeds such as the Asino di Martina Franca, the Baudet de Poitou and the Mammoth Jack are raised only for mule production. The hybrid between a stallion and a jenny is a hinny, and is less common. Like other inter-species hybrids, mules and hinnies are usually sterile. Donkeys can also breed with zebras in which the offspring is called a zonkey (among other names).
List of mammals of Montana
Order: Chiroptera
Family: VespertilionidaeThe wild horse (Equus ferus) is a species of the genus "Equus", which includes as subspecies both the domesticated horse as well as the undomesticated Tarpan and Przewalski's Horse. The term "wild horse" is also used colloquially to refer to free roaming herds of feral horses such as the Mustang in the United States, the Brumby in Australia, and many others. These feral horses are untamed members of the domestic horse subspecies ("Equus ferus caballus"), and should not be confused with the two truly "wild" horse subspecies.