That's not a baby horse you're looking at—it's Thumbelina, the world's smallest dwarf miniature horse! She's only about a foot-and-a-half tall and weighs 57 pounds! They don't make 'em any tinier or squeer than her.
I don't know about you, but I'm pretty jealous of these darling little horse friends and how foal of life they seem to be. :)