The water deer (Hydropotes inermis) is a small deer superficially more similar to a musk deer than a true deer. Native to China and Korea, there are two subspecies: the Chinese water deer (Hydropotes inermis inermis) and the Korean water deer (Hydropotes inermis argyropus). Despite its lack of antlers and certain other anatomical anomalies—including a pair of prominent tusks (downward-pointing canine teeth), it is classified as a cervid. Its unique anatomical characteristics have caused it to be classified in its own genus (Hydropotes) as well as its own subfamily (Hydropotinae). However, a study of mitochondrial cytochrome b sequences placed it near Capreolus within an Old World section of the subfamily Capreolinae. Its prominent tusks (elongated canines), similar to those of musk deer, h