Crossword Genius

Fur covering one carnivorous mammal (5)

Ross

I think it could be either:

otter

coati

'carnivorous mammal' is the definition.
(I know this)

'fur covering one' is the wordplay.
'fur' becomes 'coat' (an animal's coat).
'covering' says to put letters next to each other (in a down clue, some letters go on top of others).
'one' becomes 'i' (Roman numeral).
'coat'+'i'='COATI'

(Other definitions for coati that I've seen before include "Racoon-like omnivorous creature of Central and South America" , "Furry animal" , "Plantigrade carnivore" , "omnivorous mammal" , "American denizen" .)

I've seen this clue in The Telegraph.
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