Equine animal (5)
I believe the answer is:
horse
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">equine animal</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 horse that I've seen before include "Arab" , "See 13" , "Animal; cavalry" , "Animal with withers" , "Cavalry - gymnastic apparatus" .)