Crossword Genius

River mammal (5)

Ross

I believe the answer is:

otter

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">river mammal</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 otter that I've seen before include "Semi-aquatic mammal" , "Good swimmer" , "Holt dweller" , "Tarka, for one" , "Freshwater carnivorous mammal with webbed and clawed feet" .)

I've seen this clue in The Sun, the Penny Press, the LA Times, the USA Today, The Telegraph, The Times and The Mirror.
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