Circus barkers
I believe the answer is:
seals
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">circus barkers</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 seals that I've seen before include "They make an impression" , "Makes waterproof" , "Animals spotted on coast" , "Marine mammals" , "Great swimmers" .)