Stubborn animal (3)
I believe the answer is:
ass
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stubborn animal</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 ass that I've seen before include "Donkey or silly person" , "Small hoofed animal" , "Charlie" , "Braying creature" , "Hardy and sure-footed animal" .)