However by the Iron Age, about 2,000 years ago, only the smaller cattle were to be found on sites in both Orkney and Shetland. At the recent archaeological dig at Upper Scalloway, the bone remains reveal an animal which would have stood just over one metre high at the shoulder. Archaeologists describe this animal as being a short-legged, stocky, short horned beast. They feel that these animals were descended from a gene pool, with little or no importation of fresh bloodstock, judging by a very common dental defect found among animals, namely a missing innermost molar.