Large, short-haired dog (7)
I believe the answer is:
mastiff
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large short-haired dog</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for mastiff that I've seen before include "Hound" , "Large short-haired dog breed" , "Strong breed of dog" , "Powerful dog breed" , "Large, powerful, short-haired dog" .)