Once possessing a range from the British Isles through Central Asia over the Bering Strait into Alaska and Canada's Yukon as well as the Northwest Territories, saigas survived in Moldova and Romania into the late 18th century. Deforestation, demographic pressure, as well as excessive hunting eradicated the native saiga herds which is currently threatened with extinction. They were considered a characteristic animal of Scythia in antiquity. Historian Strabo referred to the saigas as the "kolos", describing it as "between the deer and ram in size" which (understandably but wrongly) was believed to drink through its nose.