Learn what you need to know about domestic donkey sizes.
Homesteaders might not know domestic donkey sizes may vary. Domestic donkeys come in four sizes. Miniature donkeys are less than nine hands (36 inches) at the withers when fully grown. Standard donkeys are over nine but under 12 hands (36 to 48 inches), large standard donkeys are 12 to 14 hands (48 to 56 inches) and mammoth donkeys are at least 14 hands (over 56 inches).