Both the Canadian Donkey and Mule Association and the American Donkey and Mule Society register donkeys according to their size, as miniature, standard or mammoth donkeys. Adult miniature donkeys stand or less at the withers. Small standard donkeys stand from over and large standard donkeys stand from over to for jennies, or for jacks and geldings. Mammoth jennies are taller than , and mammoth jacks and geldings over . Any donkey with at least two spots behind the throatlatch and above the legs can be registered with the American Council of Spotted Asses under the trademarked name American Spotted Ass. Notes References Mammals of North America Donkey breeds Donkey breeds originating in the United States