Only because yak is living in remote area and oxherd, with low knowledge,  has less communication with outside world , the yak is less heard and popular as sheep and milk cow.

只因牦牛栖息在偏远地区，养畜牦牛的牧民又甚少与外界接触，知识水平都普遍低下，以致牦牛的经济价值不及羊和乳牛般广为人知。