People sometimes train them as service animals (be the first on your block with a “Seeing Eye Horse”), and even as house pets, since I presume they make tiny road apples. However, they are still horses when it comes down to it, and their natural reaction to being scared is to run like hell, so they won’t be replacing your Black Lab anytime soon for those long walks in the woods playing fetch.
From the Upcoming ueue, submitted by euphoriajoca.
Not that mini-horses aren't cute, but I think they lose something important along with the size.
I'd rather like the tank-like big worker-horse like the Belgian stallion. http://www.naturhov.dk/prod/litteratur-filer/HORSEPOWER-filer/image005.jpg