Thumbelina the world's smallest horse

She may be small, a mere 17 inches and weighing only 60 pounds. But she is all horse.Born as a dwarf to a miniature horse, Thumbelina is officially the world’s smallest horse.She may never aspire to be a champion show-jumper – she is so tiny she would find it hard to jump over a bucket.But these things matter little to the feisty Thumbelina, who has been officially recognized as the world’s smallest horse.That title was conferred on her in 2006 when the five-year-old entered the Guinness Book of Records.The real-life My Little Pony was born on an American farm to a couple who specialize in breeding miniature horses.Normally these horses weight about 250lb and rise to a height of 34 inches when they are fully grown.But from the day she was born it was clear that tiny Thumbelina would never grow to that size.She weighed in at only 8lb – the size of a new-born baby - when she was born. Eventually she grew to just 60lb.Her amazing size has been explained as dwarfism. This makes her a miniature of a miniature.