Sound of animal having returned without a saddle (8)
I believe the answer is:
bareback
'without a saddle' is the definition.
(synonyms)
'sound of animal having returned' is the wordplay.
'sound of animal' becomes 'bare' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'having' says to put letters next to each other.
'returned' becomes 'back' (I've seen this in other clues).
'bare'+'back'='BAREBACK'
Can you help me to learn more?
(Other definitions for bareback that I've seen before include "kind of riding" , "On a horse without a saddle" , "On an unsaddled horse" .)