The Icelandic horse is a breed of horse developed in Iceland. Although the horses are small, at times pony-sized, most registries for the Icelandic refer to it as a horse. Icelandic horses are long-lived and hardy. In their native country they have few diseases; Icelandic law prevents horses from being imported into the country and exported animals are not allowed to return. They are developed from ponies taken to Iceland by Norse settlers in the 9th and 10th centuries.