1882 A. S. Armstrong & G. O. Campbell xvii. 186 This fence can be made still more sheep-proof..by leaving out the bottom wire, and having..a light embankment thrown up.
1903 ‘T. Collins’ iv. 134 The fence, much damaged by floods, was repaired merely to the sheep-proof standard.
1950 July 74/2 20 paddocks, all sheep-proof fenced.