Vicuña descendant (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
alpaca
(Other definitions for alpaca that I've seen before include "Type of llama" , "Fabric made from llama wool" , "Llama-like domesticated animal, valued for its wool" , "Woolly animal" , "Long-haired mammal related to the llama" .)