Creature, wild, part hen (7)
I believe the answer is:
panther
'creature' is the definition.
(thesaurus)
'wild part hen' is the wordplay.
'wild' indicates anagramming the letters.
'part'+'hen'='parthen'
'parthen' with letters rearranged gives 'PANTHER'.
(Other definitions for panther that I've seen before include "big pussycat" , "Black leopard" , "See 2" , "animal!" , "kind of feline" .)