Giraffe's relative (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">giraffe's relative</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 okapi that I've seen before include "Giraffe-like animal with stripes" , "One of the giraffe family" , "beast from Africa" , "African animal related to the giraffe" , "rainforest ruminant" .)