Here are the pictures of Yak (Bos grunniens) with links to the pages on which they appear, links to the full sized picture, and the description of the picture with links to the entry in iNaturalist (inaturalist.org)
Mongolia People The cattle in Mongolia are mostly small domesticated Yaks (Bos grunniens, german: Yak, french: Yack). They are better suited for the long, cold winter than our cattle. (1115k) Tibet Nature A domesticated Yak (Bos grunniens, german: Yak, french: Yack). These are HUGE creatures. And the wild ones are supposed to be even larger than the domesticated ones. (616k) Links to Bos grunniens on aerobaticsweb.org