Animal coming from mountain, a short cat (6)
I believe the answer is:
alpaca
'animal' is the definition.
(South American animal)
'mountain a short cat' is the wordplay.
'mountain' becomes 'alp' (the Alps are a mountain range).
'short' means to remove the last letter.
'cat' with its last letter removed is 'ca'.
'alp'+'a'+'ca'='ALPACA'
'coming from' acts as a link.
(Other definitions for alpaca that I've seen before include "Wool of S American lama" , "South American relative of the llama" , "South American camelid" , "Llama-like animal with long black hair" , "Long-haired mammal related to the llama" .)