Turncoat? The Spanish honey badger? (5)
I believe the answer is:
ratel
'honey badger?' is the definition.
(synonyms)
'turncoat? the spanish' is the wordplay.
'turncoat?' becomes 'rat' (I've seen this in other clues).
'the spanish' becomes 'el' ('the' in Spanish).
'rat'+'el'='RATEL'
(Other definitions for ratel that I've seen before include "Mammal's" , "animal like a badger" , "wild animal" , "Animal of Africa and India - alert (anag)" , "Honey badger" .)