Young cats (7)
I believe the answer is:
kittens
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">young cats</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for kittens that I've seen before include "Feline young" , "Young cats" , "Young felines" , "Have such pets" , "Feline youngsters" .)