Vicuña's cousin (6)
I believe the answer is:
alpaca
'vicuna's cousin' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for alpaca that I've seen before include "South American camelid" , "S American mammal related to the llama" , "S American mammal in the llama family" , "Wool of S American lama" , "Llama-like animal with long black hair" .)