Mink at odds with alpaca, llama or donkey? (4,6)
I believe the answer is:
pack animal
'llama or donkey?' is the definition.
(I know that many llamas are pack animals)
'mink at odds with alpaca' is the wordplay.
'at odds with' is an anagram indicator.
'mink' with its letters anagrammed with 'alpaca' gives 'PACK-ANIMAL'.
(Other definitions for pack animal that I've seen before include "Mule, for example" , "it humps loads" , "llama, perhaps" .)