Otter kin (4)
I believe the answer is:
mink
'otter kin' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mink that I've seen before include "Source of fur for coats" , "Animal of weasel family with highly-valued fur" , "(Animal prized for its) fur" , "Fur (garment)" , "(Fur from) small carnivore" .)