Carnivorous mammal (8)
I believe the answer is:
mongoose
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">carnivorous 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 mongoose that I've seen before include "Carnivorous mammal that slays snakes" , "Animal that kills snakes" , "Slayer of snakes" , "Predatory mammal known for killing snakes" , "Small mammal that preys on snakes" .)