Uncle Remus’s vulpine brother (4,3)
I believe the answer is:
brer fox
'uncle remus's vulpine' is the definition.
I know nothing about this answer so I can't judge whether this works.
'brother' is the wordplay.
I cannot really understand how this works, but
'brother' could be 'br' and 'br' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for brer fox that I've seen before include "He "lay low"" , "Uncle Remus character" .)