Here is some info on sizes and also the page where I got it from...
What could be more fun that a Miniature Donkey? A whole pasture full of them!
Love horses, but don't have the room for a full-sized equine? Want something different? Try a Miniature Mediterranean Donkey!
These small cousins of the horse range in size from 25" (the smallest on record) to 36" at the withers. They come in a delightful range of colors from the classic Gray-Dun (Slate gray) to Red (sorrel) to black and even spotted. Want chocolate brown, light pink, gray-and-white spotted, or how about ivory (blue eyed, pink-skinned white)? There just may be the Miniature donkey for you!
Miniature Mediterranean Donkey