It is thought that the horses the Vikings brought with them had a broad variation of looks and many colours, and as such there is today a large variaton in colour in the Icelandic horses, they can have more than 40 different colours. The horse has been very important as a means of transport and a work animal throughout the Iceland´s history. Since around 1920 the horses have been recorded in pedigrees. Jeeps and tractors have largely replaced the horse as a work animal after World War II. The horses are today sometimes used when collecting sheep, but mostly for horse-racing or riding trips.