Favourite (3)

I believe the answer is:
pet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">favourite</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pet that I've seen before include "Tamed domestic animal" , "Favourite, perhaps a domestic animal" , "Paddy" , "Domesticated animal" , "Particular favourite" .)