Mountain beast of burden (6)

I believe the answer is:

alpaca

(Other definitions for alpaca that I've seen before include "Llama-like domesticated animal, valued for its wool" , "Wool of S American lama" , "Long-haired animal related to the llama" , "S American mammal related to the llama" , "Llama-like creature" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.