Domestic horses and the named breeds developed from them for work, riding or racing, together with the donkey, a separate equine species FAO and DAD-IS class as Asses. Held under one heading as a browsing convenience, named openly as such, since this atlas carries only one entity in the ass family so far. Belongs here: horses, horse breeds, donkeys, or a mule or other equine hybrid once this atlas carries one. Does not belong here: a non-equine livestock species, whatever its role as a working or riding animal in some cultures, such as the camelids, held under their own heading.