Menacing animal sound (5)
I believe the answer is:
growl
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">menacing animal sound</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for growl that I've seen before include "snap" , "Low rumble" , "Noise of an angry dog" , "Threatening dog's noise" , "warn of attack" .)