Einstein was born in New Hampshire on April 22, 2010, and weighed an astonishingly small 6 pounds and stood 14 inches tall, setting a world record as the planet’s smallest newborn horse., Einstein the miniature horse was born on April 22, 2010, at a farm in New Hampshire. With his parents being average-sized at 32 and 30 inches tall, he surprised everyone when he arrived at a mere 6 pounds and 14 inches tall, setting a world record as the smallest newborn horse., The world's smallest horse has a large personality! Don't make any mistakes either 'Einstein' isn't. dwarf but a real 'small horse' and adorable!, Meet Einstein, the world's smallest stallion! When he was born on April 22, 2010, he weighed only 6 pounds and was no taller than a box of cereal: the smallest horse ever born. Now fully grown, he's about 2 feet tall and 80 pounds - the size of a Golden Retriever., I was a miniature miniature horse. Too small to run with the herd, I had to look outside my world of horses to find the perfect playmate. My book features full-color photographs of my adventures and the adorable creatures I've met., Einstein set a world record for becoming the smallest newborn horse. If you are looking for comparisons, a normal horse will average around 5 feet in height and carry around 1,500 pounds on its frame (fully grown, of course)..