Most miniature horses are two to three feet tall. Not Thumbelina. At only 17.5 inches, Thumbelina is a dwarf miniature, the smallest horse in the world! This photographic picture book tells the life story of an extraordinary, beloved animal. Readers discover Thumbelina's needs, what she eats, and how she spends her days. They also meet her best friend, Cassie the dog, and some of the countless special needs children she visits every year when she tours the country in her custom Thumbymobile!