Sexual segregation in Soay sheep ("Ovis aries") have been observed. "Ovis aries musimon" as early as 1782. Sheep ("Ovis aries") are quadrupedal, ruminant mammals typically kept as livestock. A minority of historians once posited a contentious African theory of origin for "Ovis aries". This was followed by introducing feral mouflon ("Ovis aries orientalis") onto the island for hunters. Other host species include "Ovis aries", "Mansonia", and "Aedes vittatus". "Homo sapiens", "Ovis aries", "Capra aegagrus hircus", "Bos primigenius", and the order Rodentia.