Ruminant from foreign uplands (3)
I believe the answer is:
gnu
'ruminant' is the definition.
(gnu is a kind of ruminant)
'from foreign uplands' is the wordplay.
'from' indicates the answer is hidden within the clue.
'GNU' is hidden within 'foreign uplands'.
(Other definitions for gnu that I've seen before include "Creature" , "Literally wild beast" , "hitherto unknown, we hear" , "animals" , "Antelope sounds as if it has knowledge" .)