Aardvark's diet (4)
I believe the answer is:
ants
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">aardvark's diet</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ants that I've seen before include "workers found returning" , "Hard workers" , "Inhabitants of a formicary" , "Emmets" , "24 [INSECT] s" .)