Ruminant producing gas (3)
I believe the answer is:
yak
I believe this is a double definition.
'ruminant' is the first definition.
(yak is a kind of ruminant)
'gas' is the second definition.
(thesaurus)
'producing' is the link.
(Other definitions for yak that I've seen before include "Himalayan bovine" , "Long haired ox of central Asia" , "Large long-haired ox" , "Gossip (sl)" , "Shaggy Tibetan ox" .)