The miniature donkey is any breed of donkey that matures below 36” (class A) and 38" (class B) in height.  If the donkey is above 38” in height regardless of breed it is NOT a miniature and most societies will not register the animal as such.  The same applies to ponies and horses throughout the world.  Miniature Donkeys originated from the  Mediterranean area of Northern Africa in ancient times and more recently from the islands of Sicily and Sardinia off the west coast of Italy. Over time the distinctions between the two island populations blurred and they are now considered one breed properly called Miniature Mediterranean Donkeys. 
 
Miniature Donkeys have not been bred down in size per se. The 25-30 Miniature Donkeys originally imported into the U.S. were between the sizes of 32" and 38" with the majority of them being in the 35"-37" size range.  Over the years, breeders have concentrated more on the 32"-33" size and today you’re most desirable and well-conformed donkeys are from 31" to 35".  
 
The original Miniature Mediterranean Donkey was not miniaturised, but a proper miniature working animal, stocky, draft type, strong boned and well muscled.  The word "miniature" usually means animals that have been bred-down in size, so keep in mind that 'miniature donkeys' are simply diminutive and not bred down such is the case of many other 'miniature' animals.At maturity (3years), it is able to pull a cart or carry a pack as it did in its native Sicily and Sardinia. Their average height is 34" with a maximum of 36"(class A) and 38” (class B) allowed for the breed registration.  
 
In the United States Donkey Breeds are determined by size, not lineage.  Robert Green, a New York stockbroker with a farm in New Jersey, first imported miniature Donkeys from the Mediterranean to the United States in 1929.  While he  was travelling through Europe, dogs killed three of the imported Jennies only a few months after their arrival, but the three surviving Jennies, ‘Miranda, Palermo and Suzanne’, and jack ‘Impheus’, became the foundation stock for the Green herd.  One of the Jennies was pregnant and on Columbus Day 1929, she gave birth to a little jack who was named ‘Christopher Columbus’, the first miniature donkey born in the USA.  Robert Green particularly enjoyed driving the donkeys to his extensive collection of vehicles, including sleds, chariots, woven baskets and imported Italian antique carts.  He is quoted as saying, “Miniature Donkeys possess the affectionate nature of a Newfoundland, the resignation of a cow, the durability of a mule, the courage of a tiger, and the intellectual capability only slightly inferior to man’s.”In 1935 Green had a herd of 52 donkeys.  He only sold a few of his cherished little donkeys when his herd became too large.  
 
Among his buyers were Mr. Richard Sagendorph, Henry T. Morgan and August Busch, Jr. (Whose donkeys one can find in pedigrees with the ‘Belleau’ prefix, and whose stud still survives today). These families also imported more of the little donkeys as well and were the original developers of today’s donkey stock.  In the early 1950’s, Daniel & Bea Langfeld bought their first miniature donkey, Pepi, from August Busch, Jr. of St. Louis, MO, as a pet for their daughter who had cerebral palsy.  The Langfelds established the Danby Farm in Omaha, Nebraska where they raised show quality Miniature donkeys.
 
They were the first professional breeders of miniature donkeys in the USA, eventually having as many as 60 to 225 miniature donkeys in their herd.  Bea Langfeld established the original registry, The Miniature Donkey Registry of the United States in 1958.  She turned the registry over to the stewardship of the American Donkey and Mule Society in Denton, Texas in 1987.
 
Colour
The most prevalent colour for Miniature Donkeys is gray-dun which consists of a gray coloured body, light coloured nose - or dark coloured nose, light coloured belly and inside legs, with a dark colour dorsal stripe down the back and over the shoulders.  The dorsal stripe is known as the donkeys cross.  There are variations of this gray-dun from dark to light.  As with most animals, donkeys can range in colour from black to white and everything in between.  True blacks are rare with black/browns (not quite black) being more common.  There are chestnut/sorrels which are various shades of reddish brown. There are also white donkeys and "spotted" donkeys.  
 
Some people refer to spotted as "pinto" and this really boils down to semantics.  Spotted or pintos are generally gray or brown and white.  There are also various colours of roans.  Roan colouring is black, brown, gray hairs intermingled with white hairs.  Donkeys do not breed true to colour.  Since gray-dun is by far the predominant gene, you can breed black to black and get gray-dun, spotted to spotted and get gray-dun, etc. Never knowing what colour foal will be produced is part of the excitement of having foals. Colours other than the typical gray-dun make the donkey more exotic looking therefore increases their price. 
 
Personality
The first and foremost attraction to Miniature Donkeys is their loving personalities. They demand attention!  They form close attachments to their owners and to other donkeys.  Because of their laid-back, easy going personalities, they make wonderful pets for children, people with special needs and the elderly. 
 
Conformation
Every breeder has their own idea of what they want to breed for. This is their privilege and their right as a breeder. There are miniature donkeys that are compact with a draft type build and other donkeys with slender more leggy builds. The National Miniature Donkey Association has Breed Standards© for Miniature Donkeys which are well worth reading.
 
Braying......
Although the donkey's best known noise is the bellowing "Hee-Haw" (known as braying), a donkeys vocabulary is quite extensive.  A series of snuffles, wheezes and grunts of varying intensity are also used to communicate.  All donkeys will bray with joy and excitement at the sight of their owners.  This is especially true if the owners have been out of sight for any length of time.  Jacks will bray often, firstly to any Jennies that maybe in season and secondly to warn other Jacks that this is his territory.  Jennies and Geldings however, bray mainly morning and evening to locate each other.  One of the greatest compliments your donkey can give is to stay lying down when you approach him.  This shows an enormous amount of trust in you, as the normal reaction of a donkey would be to rise to his feet.   
 
Reproduced with permission from the “Miniature Donkey Talk Magazine” and “The International Miniature Donkey Registry”, Wikipedia & Encyclopaedia Britannia
 
Further information regarding Miniature Mediterranean Donkeys can be found at: