Himalayan ox (3)
I believe the answer is:
yak
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">himalayan ox</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for yak that I've seen before include "A long-haired Asian ox" , "Bos grunniens" , "Talk persistently" , "one sporting a thick coat" , "Large long-haired ox" .)