Cured ailing animal in India (6)
I believe the answer is:
nilgai
'animal in india' is the definition.
(type of bull native to India)
'cured ailing' is the wordplay.
'cured' is an anagram indicator.
'ailing' is an anagram of 'NILGAI'.
(Other definitions for nilgai that I've seen before include "animal" , "Large Indian antelope, ailing (anag.)" , "creature" .)