Antelope with lyre-shaped horns
I believe the answer is:
impala
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">antelope with lyre-shaped horns</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 impala that I've seen before include "Big game" , "prodigious bounder" , "horned beast" , "Graceful antelope" , "One regularly browsing" .)