US animal's odour about to get inhaled by nocturnal creature (6)
I believe the answer is:
bobcat
'us animal's' is the definition.
(animal native to the US)
'odour about to get inhaled by nocturnal creature' is the wordplay.
'odour' becomes 'B.O.' (B.O. is an example).
'about' becomes 'c' (abbreviation for 'circa').
'to get inhaled by' is an insertion indicator (inserted letters are absorbed or inhaled).
'nocturnal creature' becomes 'bat'.
'c' placed inside 'bat' is 'bcat'.
'bo'+'bcat'='BOBCAT'
(Other definitions for bobcat that I've seen before include "A sort of lynx" , "North American feline" , "North American lynx" , "Small N American lynx" , "Relation of the lynx" .)