Maximum height of 36" at the withers measured at 3 years has already been established by the Miniature Donkey Registry (Administered by the American Donkey and Mule Society / 972-219-0781 / firstname.lastname@example.org / www.lovelongears.com). A minimum height of 30" is strongly recommended by NMDA.
While most of an individual's mature height is attained during its first year, an individual is not considered mature in height and strength of bone until three years.
• The reproductive fitness of a Miniature Donkey may be compromised in individuals under 30" – see Reproductive Fitness section.
• Focus on breeding individuals under 30" through each generation enhances the possibility of dwarfism.
• Individuals under 30" may adversely affect conformation and balance.
• Individuals under 30" may hinder their own ability to enter performance classes where strength is often emphasized, i.e. driving, jumping.