A tiny horse with a rare form of dwarfism is set to become an Internet superstar after his owner posted a video to Facebook. Little Shammy's condition may make him smaller than his fellow equines - but that doesnt stop him being mischievous and delighting his online fan base. After Michele posted a video to a Facebook page she set up for Shammy he quickly gained 5,000 fans so she decided to write a book about his exploits. Unfortunately his condition will inevitably lead to problems later on in life.