Horse breed been produced. Such restrictions have led to legal challenges in the United States, sometime based on state law and sometimes based on antitrust laws. Horses can crossbreed with other equine species to produce hybrids. These hybrid types are not breeds, but they resemble breeds in that crosses between certain horse breeds and other equine species produce characteristic offspring. The most common hybrid is the mule, a cross between a "jack" (male donkey) and a mare. A related hybrid, the hinny, is a cross between a stallion and a jenny (female donkey). Most other hybrids involve the zebra (see Zebroid). With
The Adventures of a Donkey Staples - Jemmy's fifth owner Juba - Donkey who shares Mr Staples' shed with Jemmy and Balaam Earl of Hampton - Jemmy's sixth owner Lady Hampton - Earl of Hampton's wife Lady Harriet - Earl and Lady Hampton's daughter Master Hubert - Lady Harriet's brother Mr Maxwell - Bricklayer; hires Jemmy from Mrs Staples for two months Thomas - Mr Staples' son Cousin Smith - Mr Staples cousin The Sandman - Jemmy's seventh owner Mrs Ellis - Laundress who cares for Jemmy Mr Turner - Jemmy's eighth owner Maria Turner - Mr Turner's eldest daughter Emma Turner - Mr Turner's