Because of its distinctive call, this central Asian bovine is known as the grunting ox
The etymology of Bos in Latin is ox, grunniens is grunting, and mutus is mute (a 
poor description because wild yaks are ... metaphorical expressions for the 
domestic yak emphasize its ... 'skirt,' which imparts ... an entirely distinctive 
appearance" .... evolved in central Asia from a common ancestor (Groves.