 Mammary cancer is the leading cause of Skye Terrier deaths, with hemangiosarcomas (a malignant tumour of the blood vessels), autoimmune disease, and hyperthyroidism as other concerns of the breed.These dogs were found on the Isle of Skye, and the dogs were then named Skye Terriers.Some confusion exists in tracing its history because, for a certain time, several different breeds had the same name "Skye Terrier".