http://bestworldstuff.blogspot.com/2010/03/world-smallest-horse-tallest-horse.html
World Tallest horse name is "Radar". "Radar " is a Belgian
drought horse. The Smallest horse name is "Thumbelina". The different between height of them are 157 cm.
http://bestworldstuff.blogspot.com/2010/03/world-smallest-horse-tallest-horse.html