Fedor Jeftichew, better known as Jo-Jo the Dog-Faced Boy (1868 - January 31, 1904) was a Russian sideshow performer. Like his father, Adrien, with whom he performed, Jo-Jo was afflicted with hypertrichosis, an abnormal growth of hair over the face and body. Jo-Jo was covered with long, silky hair and was said to resemble a Skye terrier.