Warm-blooded creature (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">warm-blooded creature</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for mammal that I've seen before include "Animal of a class giving birth to live young" , "Warm-blooded animal" , "One of a class of warm-blooded vertebrates" , "Animal that nourishes its young with milk" , "Creature like man" .)