English country animal (5)
I believe the answer is:
eland
'animal' is the definition.
(thesaurus)
'english country' is the wordplay.
'english' becomes 'e' (abbreviation).
'country' becomes 'land' ('land' can be a synonym of 'country').
'e'+'land'='ELAND'
(Other definitions for eland that I've seen before include "game animal" , "Largest living antelope" , "Large spiral-horned African antelope" , "Large African deer with short spiral horns" , "African mammal" .)