Species of wild goat (4)
I believe the answer is:
ibex
'species of wild goat' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ibex that I've seen before include "Large-horned wild goat" , "Mountain goat with curving horns" , "Wild goat of North Africa" , "Sure-footed climber" , "Sure-footed type" .)