Ungulate mammal (5)
I believe the answer is:
camel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ungulate mammal</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 camel that I've seen before include "Bearer of burdens" , "Means of transport" , "Humped beast" , "quadruped" , "Beast of burden in desert regions" .)