American Miniature Horse Association (AMHA): A Texas-based registry, which requires all of their registered miniature horses to measure 34" or less.
American Miniature Horse Registry (AMHR): An Illinois-based registry that has the following two separate height categories for registration under their definition of a miniature horse:
Division "A" miniatures - 34" and under
Division "B" miniatures - over 34" and up to 38" |
