Einstein, The Smallest Foal In The World – Photos This is Einstein, the smallest baby horse in the world. Einstein was born on Friday April 23, 2010 at Tiz Miniature Horse Farm in Barnstead, New Hampshire. Einstein is only 14 inches high and weighs only 6 lbs. The 3 day old Einstein is shorter than a 1 year old baby 🙂 I think Einstein will grow up to a maximum of 70cm high. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Like this:Like Loading...