Zoo (9)
I believe the answer is:
menagerie
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">zoo</span>' is the definition.<br/ ><span class="explanation-format__explanation">(a menagerie is a collection of animals)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for menagerie that I've seen before include "Exhibited collection of wild animals" , "Zoo" , "Animals go in here" , "[TENNESSEE WILLIAMS] work in part" , "place to keep animals" .)